Home / 15,720.11-21,693.51-8,550.14

Finding the Fourth Proportional to 15,720.11, 21,693.51 and 8,550.14

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Solution

The fourth proportional to 15,720.11, 21,693.51 and 8,550.14 is: 11,799.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.11 : 21,693.51 = 8,550.14 : x
  2. Step 2: Convert to fraction form
    15,720.11/21,693.51 = 8,550.14/x
  3. Step 3: Cross multiply
    15,720.11x = 21,693.51 × 8,550.14
  4. Step 4: Simplify right side
    15,720.11x = 185,482,439.12
  5. Step 5: Solve for x
    x = 185,482,439.12/15,720.11
  6. Step 6: Final answer
    x = 11,799.06

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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.