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Finding the Fourth Proportional to 28,352.70, 42,575.13 and 14,528.70

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Solution

The fourth proportional to 28,352.70, 42,575.13 and 14,528.70 is: 21,816.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.70 : 42,575.13 = 14,528.70 : x
  2. Step 2: Convert to fraction form
    28,352.70/42,575.13 = 14,528.70/x
  3. Step 3: Cross multiply
    28,352.70x = 42,575.13 × 14,528.70
  4. Step 4: Simplify right side
    28,352.70x = 618,561,291.23
  5. Step 5: Solve for x
    x = 618,561,291.23/28,352.70
  6. Step 6: Final answer
    x = 21,816.66

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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.