Home / 21,258.02-29,376.53-15,943.61

Finding the Fourth Proportional to 21,258.02, 29,376.53 and 15,943.61

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Solution

The fourth proportional to 21,258.02, 29,376.53 and 15,943.61 is: 22,032.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.02 : 29,376.53 = 15,943.61 : x
  2. Step 2: Convert to fraction form
    21,258.02/29,376.53 = 15,943.61/x
  3. Step 3: Cross multiply
    21,258.02x = 29,376.53 × 15,943.61
  4. Step 4: Simplify right side
    21,258.02x = 468,368,010.91
  5. Step 5: Solve for x
    x = 468,368,010.91/21,258.02
  6. Step 6: Final answer
    x = 22,032.53

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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.