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Finding the Fourth Proportional to 28,233.06, 38,978.52 and 17,637.06

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Solution

The fourth proportional to 28,233.06, 38,978.52 and 17,637.06 is: 24,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,233.06 : 38,978.52 = 17,637.06 : x
  2. Step 2: Convert to fraction form
    28,233.06/38,978.52 = 17,637.06/x
  3. Step 3: Cross multiply
    28,233.06x = 38,978.52 × 17,637.06
  4. Step 4: Simplify right side
    28,233.06x = 687,466,495.95
  5. Step 5: Solve for x
    x = 687,466,495.95/28,233.06
  6. Step 6: Final answer
    x = 24,349.70

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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.