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Finding the Fourth Proportional to 28,370.59, 42,543.57 and 9,645.59

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Solution

The fourth proportional to 28,370.59, 42,543.57 and 9,645.59 is: 14,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.59 : 42,543.57 = 9,645.59 : x
  2. Step 2: Convert to fraction form
    28,370.59/42,543.57 = 9,645.59/x
  3. Step 3: Cross multiply
    28,370.59x = 42,543.57 × 9,645.59
  4. Step 4: Simplify right side
    28,370.59x = 410,357,833.36
  5. Step 5: Solve for x
    x = 410,357,833.36/28,370.59
  6. Step 6: Final answer
    x = 14,464.20

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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.