Home / 21,125.11-29,152.21-11,564.76

Finding the Fourth Proportional to 21,125.11, 29,152.21 and 11,564.76

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Solution

The fourth proportional to 21,125.11, 29,152.21 and 11,564.76 is: 15,959.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.11 : 29,152.21 = 11,564.76 : x
  2. Step 2: Convert to fraction form
    21,125.11/29,152.21 = 11,564.76/x
  3. Step 3: Cross multiply
    21,125.11x = 29,152.21 × 11,564.76
  4. Step 4: Simplify right side
    21,125.11x = 337,138,312.12
  5. Step 5: Solve for x
    x = 337,138,312.12/21,125.11
  6. Step 6: Final answer
    x = 15,959.13

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Half scale
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Double scale
Find fourth proportional to 21,126.11, 29,153.59 and 11,565.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.