Home / 21,264.81-29,315.03-14,957.61

Finding the Fourth Proportional to 21,264.81, 29,315.03 and 14,957.61

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Solution

The fourth proportional to 21,264.81, 29,315.03 and 14,957.61 is: 20,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,264.81 : 29,315.03 = 14,957.61 : x
  2. Step 2: Convert to fraction form
    21,264.81/29,315.03 = 14,957.61/x
  3. Step 3: Cross multiply
    21,264.81x = 29,315.03 × 14,957.61
  4. Step 4: Simplify right side
    21,264.81x = 438,482,711.09
  5. Step 5: Solve for x
    x = 438,482,711.09/21,264.81
  6. Step 6: Final answer
    x = 20,620.11

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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.