Home / 15,605.33-21,535.40-8,531.87

Finding the Fourth Proportional to 15,605.33, 21,535.40 and 8,531.87

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Solution

The fourth proportional to 15,605.33, 21,535.40 and 8,531.87 is: 11,774.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.33 : 21,535.40 = 8,531.87 : x
  2. Step 2: Convert to fraction form
    15,605.33/21,535.40 = 8,531.87/x
  3. Step 3: Cross multiply
    15,605.33x = 21,535.40 × 8,531.87
  4. Step 4: Simplify right side
    15,605.33x = 183,737,146.85
  5. Step 5: Solve for x
    x = 183,737,146.85/15,605.33
  6. Step 6: Final answer
    x = 11,774.00

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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.