Home / 15,437.91-21,316.31-11,847.18

Finding the Fourth Proportional to 15,437.91, 21,316.31 and 11,847.18

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Solution

The fourth proportional to 15,437.91, 21,316.31 and 11,847.18 is: 16,358.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,437.91 : 21,316.31 = 11,847.18 : x
  2. Step 2: Convert to fraction form
    15,437.91/21,316.31 = 11,847.18/x
  3. Step 3: Cross multiply
    15,437.91x = 21,316.31 × 11,847.18
  4. Step 4: Simplify right side
    15,437.91x = 252,538,191.12
  5. Step 5: Solve for x
    x = 252,538,191.12/15,437.91
  6. Step 6: Final answer
    x = 16,358.31

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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.