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Finding the Fourth Proportional to 15,605.52, 21,524.34 and 9,934.68

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Solution

The fourth proportional to 15,605.52, 21,524.34 and 9,934.68 is: 13,702.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.52 : 21,524.34 = 9,934.68 : x
  2. Step 2: Convert to fraction form
    15,605.52/21,524.34 = 9,934.68/x
  3. Step 3: Cross multiply
    15,605.52x = 21,524.34 × 9,934.68
  4. Step 4: Simplify right side
    15,605.52x = 213,837,430.11
  5. Step 5: Solve for x
    x = 213,837,430.11/15,605.52
  6. Step 6: Final answer
    x = 13,702.68

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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.