Home / 21,405.07-29,567.24-16,430.76

Finding the Fourth Proportional to 21,405.07, 29,567.24 and 16,430.76

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Solution

The fourth proportional to 21,405.07, 29,567.24 and 16,430.76 is: 22,696.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.07 : 29,567.24 = 16,430.76 : x
  2. Step 2: Convert to fraction form
    21,405.07/29,567.24 = 16,430.76/x
  3. Step 3: Cross multiply
    21,405.07x = 29,567.24 × 16,430.76
  4. Step 4: Simplify right side
    21,405.07x = 485,812,203.76
  5. Step 5: Solve for x
    x = 485,812,203.76/21,405.07
  6. Step 6: Final answer
    x = 22,696.13

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Half scale
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Double scale
Find fourth proportional to 21,406.07, 29,568.62 and 16,431.76
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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.