Home / 15,605.10-21,535.70-8,531.97

Finding the Fourth Proportional to 15,605.10, 21,535.70 and 8,531.97

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Solution

The fourth proportional to 15,605.10, 21,535.70 and 8,531.97 is: 11,774.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.10 : 21,535.70 = 8,531.97 : x
  2. Step 2: Convert to fraction form
    15,605.10/21,535.70 = 8,531.97/x
  3. Step 3: Cross multiply
    15,605.10x = 21,535.70 × 8,531.97
  4. Step 4: Simplify right side
    15,605.10x = 183,741,903.67
  5. Step 5: Solve for x
    x = 183,741,903.67/15,605.10
  6. Step 6: Final answer
    x = 11,774.48

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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.