Home / 14,272.90-21,407.46-6,479.92

Finding the Fourth Proportional to 14,272.90, 21,407.46 and 6,479.92

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Solution

The fourth proportional to 14,272.90, 21,407.46 and 6,479.92 is: 9,719.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,272.90 : 21,407.46 = 6,479.92 : x
  2. Step 2: Convert to fraction form
    14,272.90/21,407.46 = 6,479.92/x
  3. Step 3: Cross multiply
    14,272.90x = 21,407.46 × 6,479.92
  4. Step 4: Simplify right side
    14,272.90x = 138,718,628.20
  5. Step 5: Solve for x
    x = 138,718,628.20/14,272.90
  6. Step 6: Final answer
    x = 9,719.02

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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.