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Finding the Fourth Proportional to 15,605.63, 21,535.77 and 8,532.11

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Solution

The fourth proportional to 15,605.63, 21,535.77 and 8,532.11 is: 11,774.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.63 : 21,535.77 = 8,532.11 : x
  2. Step 2: Convert to fraction form
    15,605.63/21,535.77 = 8,532.11/x
  3. Step 3: Cross multiply
    15,605.63x = 21,535.77 × 8,532.11
  4. Step 4: Simplify right side
    15,605.63x = 183,745,450.90
  5. Step 5: Solve for x
    x = 183,745,450.90/15,605.63
  6. Step 6: Final answer
    x = 11,774.31

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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.