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Finding the Fourth Proportional to 28,605.52, 42,897.48 and 13,809.52

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Solution

The fourth proportional to 28,605.52, 42,897.48 and 13,809.52 is: 20,709.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.52 : 42,897.48 = 13,809.52 : x
  2. Step 2: Convert to fraction form
    28,605.52/42,897.48 = 13,809.52/x
  3. Step 3: Cross multiply
    28,605.52x = 42,897.48 × 13,809.52
  4. Step 4: Simplify right side
    28,605.52x = 592,393,608.01
  5. Step 5: Solve for x
    x = 592,393,608.01/28,605.52
  6. Step 6: Final answer
    x = 20,709.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.