Home / 15,605.72-21,535.44-8,531.99

Finding the Fourth Proportional to 15,605.72, 21,535.44 and 8,531.99

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Solution

The fourth proportional to 15,605.72, 21,535.44 and 8,531.99 is: 11,773.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.72 : 21,535.44 = 8,531.99 : x
  2. Step 2: Convert to fraction form
    15,605.72/21,535.44 = 8,531.99/x
  3. Step 3: Cross multiply
    15,605.72x = 21,535.44 × 8,531.99
  4. Step 4: Simplify right side
    15,605.72x = 183,740,158.73
  5. Step 5: Solve for x
    x = 183,740,158.73/15,605.72
  6. Step 6: Final answer
    x = 11,773.90

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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.