Home / 21,146.95-29,182.46-11,586.76

Finding the Fourth Proportional to 21,146.95, 29,182.46 and 11,586.76

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Solution

The fourth proportional to 21,146.95, 29,182.46 and 11,586.76 is: 15,989.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.95 : 29,182.46 = 11,586.76 : x
  2. Step 2: Convert to fraction form
    21,146.95/29,182.46 = 11,586.76/x
  3. Step 3: Cross multiply
    21,146.95x = 29,182.46 × 11,586.76
  4. Step 4: Simplify right side
    21,146.95x = 338,130,029.34
  5. Step 5: Solve for x
    x = 338,130,029.34/21,146.95
  6. Step 6: Final answer
    x = 15,989.54

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Double scale
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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.