Home / 14,319.60-21,470.16-6,909.36

Finding the Fourth Proportional to 14,319.60, 21,470.16 and 6,909.36

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Solution

The fourth proportional to 14,319.60, 21,470.16 and 6,909.36 is: 10,359.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,319.60 : 21,470.16 = 6,909.36 : x
  2. Step 2: Convert to fraction form
    14,319.60/21,470.16 = 6,909.36/x
  3. Step 3: Cross multiply
    14,319.60x = 21,470.16 × 6,909.36
  4. Step 4: Simplify right side
    14,319.60x = 148,345,064.70
  5. Step 5: Solve for x
    x = 148,345,064.70/14,319.60
  6. Step 6: Final answer
    x = 10,359.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.