Home / 15,605.16-21,535.12-8,531.58

Finding the Fourth Proportional to 15,605.16, 21,535.12 and 8,531.58

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Solution

The fourth proportional to 15,605.16, 21,535.12 and 8,531.58 is: 11,773.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.16 : 21,535.12 = 8,531.58 : x
  2. Step 2: Convert to fraction form
    15,605.16/21,535.12 = 8,531.58/x
  3. Step 3: Cross multiply
    15,605.16x = 21,535.12 × 8,531.58
  4. Step 4: Simplify right side
    15,605.16x = 183,728,521.39
  5. Step 5: Solve for x
    x = 183,728,521.39/15,605.16
  6. Step 6: Final answer
    x = 11,773.58

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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.