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Finding the Fourth Proportional to 15,057, 20,779.40 and 9,088.56

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Solution

The fourth proportional to 15,057, 20,779.40 and 9,088.56 is: 12,542.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057 : 20,779.40 = 9,088.56 : x
  2. Step 2: Convert to fraction form
    15,057/20,779.40 = 9,088.56/x
  3. Step 3: Cross multiply
    15,057x = 20,779.40 × 9,088.56
  4. Step 4: Simplify right side
    15,057x = 188,854,823.66
  5. Step 5: Solve for x
    x = 188,854,823.66/15,057
  6. Step 6: Final answer
    x = 12,542.66

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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.