Home / 15,470.88-21,349.84-8,397.31

Finding the Fourth Proportional to 15,470.88, 21,349.84 and 8,397.31

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Solution

The fourth proportional to 15,470.88, 21,349.84 and 8,397.31 is: 11,588.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.88 : 21,349.84 = 8,397.31 : x
  2. Step 2: Convert to fraction form
    15,470.88/21,349.84 = 8,397.31/x
  3. Step 3: Cross multiply
    15,470.88x = 21,349.84 × 8,397.31
  4. Step 4: Simplify right side
    15,470.88x = 179,281,150.56
  5. Step 5: Solve for x
    x = 179,281,150.56/15,470.88
  6. Step 6: Final answer
    x = 11,588.30

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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.