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Finding the Fourth Proportional to 28,575.72, 42,866.37 and 9,853.29

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Solution

The fourth proportional to 28,575.72, 42,866.37 and 9,853.29 is: 14,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,575.72 : 42,866.37 = 9,853.29 : x
  2. Step 2: Convert to fraction form
    28,575.72/42,866.37 = 9,853.29/x
  3. Step 3: Cross multiply
    28,575.72x = 42,866.37 × 9,853.29
  4. Step 4: Simplify right side
    28,575.72x = 422,374,774.86
  5. Step 5: Solve for x
    x = 422,374,774.86/28,575.72
  6. Step 6: Final answer
    x = 14,780.90

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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.