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Finding the Fourth Proportional to 15,605.70, 21,535.83 and 8,532.11

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Solution

The fourth proportional to 15,605.70, 21,535.83 and 8,532.11 is: 11,774.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.70 : 21,535.83 = 8,532.11 : x
  2. Step 2: Convert to fraction form
    15,605.70/21,535.83 = 8,532.11/x
  3. Step 3: Cross multiply
    15,605.70x = 21,535.83 × 8,532.11
  4. Step 4: Simplify right side
    15,605.70x = 183,745,962.82
  5. Step 5: Solve for x
    x = 183,745,962.82/15,605.70
  6. Step 6: Final answer
    x = 11,774.29

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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.