Home / 15,456.60-21,330.27-8,742.30

Finding the Fourth Proportional to 15,456.60, 21,330.27 and 8,742.30

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Solution

The fourth proportional to 15,456.60, 21,330.27 and 8,742.30 is: 12,064.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.60 : 21,330.27 = 8,742.30 : x
  2. Step 2: Convert to fraction form
    15,456.60/21,330.27 = 8,742.30/x
  3. Step 3: Cross multiply
    15,456.60x = 21,330.27 × 8,742.30
  4. Step 4: Simplify right side
    15,456.60x = 186,475,619.42
  5. Step 5: Solve for x
    x = 186,475,619.42/15,456.60
  6. Step 6: Final answer
    x = 12,064.47

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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.