Home / 21,339.16-29,454.78-20,224.60

Finding the Fourth Proportional to 21,339.16, 29,454.78 and 20,224.60

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Solution

The fourth proportional to 21,339.16, 29,454.78 and 20,224.60 is: 27,916.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.16 : 29,454.78 = 20,224.60 : x
  2. Step 2: Convert to fraction form
    21,339.16/29,454.78 = 20,224.60/x
  3. Step 3: Cross multiply
    21,339.16x = 29,454.78 × 20,224.60
  4. Step 4: Simplify right side
    21,339.16x = 595,711,143.59
  5. Step 5: Solve for x
    x = 595,711,143.59/21,339.16
  6. Step 6: Final answer
    x = 27,916.34

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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.