Home / 15,633.77-21,572.66-12,455.15

Finding the Fourth Proportional to 15,633.77, 21,572.66 and 12,455.15

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Solution

The fourth proportional to 15,633.77, 21,572.66 and 12,455.15 is: 17,186.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,633.77 : 21,572.66 = 12,455.15 : x
  2. Step 2: Convert to fraction form
    15,633.77/21,572.66 = 12,455.15/x
  3. Step 3: Cross multiply
    15,633.77x = 21,572.66 × 12,455.15
  4. Step 4: Simplify right side
    15,633.77x = 268,690,546.06
  5. Step 5: Solve for x
    x = 268,690,546.06/15,633.77
  6. Step 6: Final answer
    x = 17,186.55

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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.