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Finding the Fourth Proportional to 28,012.52, 38,657.04 and 15,437

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Solution

The fourth proportional to 28,012.52, 38,657.04 and 15,437 is: 21,302.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.52 : 38,657.04 = 15,437 : x
  2. Step 2: Convert to fraction form
    28,012.52/38,657.04 = 15,437/x
  3. Step 3: Cross multiply
    28,012.52x = 38,657.04 × 15,437
  4. Step 4: Simplify right side
    28,012.52x = 596,748,726.48
  5. Step 5: Solve for x
    x = 596,748,726.48/28,012.52
  6. Step 6: Final answer
    x = 21,302.93

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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.