Home / 21,387-29,527.02-13,947.96

Finding the Fourth Proportional to 21,387, 29,527.02 and 13,947.96

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Solution

The fourth proportional to 21,387, 29,527.02 and 13,947.96 is: 19,256.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387 : 29,527.02 = 13,947.96 : x
  2. Step 2: Convert to fraction form
    21,387/29,527.02 = 13,947.96/x
  3. Step 3: Cross multiply
    21,387x = 29,527.02 × 13,947.96
  4. Step 4: Simplify right side
    21,387x = 411,841,693.88
  5. Step 5: Solve for x
    x = 411,841,693.88/21,387
  6. Step 6: Final answer
    x = 19,256.64

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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.