Home / 21,262.40-29,382.57-15,947.99

Finding the Fourth Proportional to 21,262.40, 29,382.57 and 15,947.99

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Solution

The fourth proportional to 21,262.40, 29,382.57 and 15,947.99 is: 22,038.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.40 : 29,382.57 = 15,947.99 : x
  2. Step 2: Convert to fraction form
    21,262.40/29,382.57 = 15,947.99/x
  3. Step 3: Cross multiply
    21,262.40x = 29,382.57 × 15,947.99
  4. Step 4: Simplify right side
    21,262.40x = 468,592,932.53
  5. Step 5: Solve for x
    x = 468,592,932.53/21,262.40
  6. Step 6: Final answer
    x = 22,038.57

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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.