Home / 12,407.40-18,613.90-5,011.88

Finding the Fourth Proportional to 12,407.40, 18,613.90 and 5,011.88

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Solution

The fourth proportional to 12,407.40, 18,613.90 and 5,011.88 is: 7,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,407.40 : 18,613.90 = 5,011.88 : x
  2. Step 2: Convert to fraction form
    12,407.40/18,613.90 = 5,011.88/x
  3. Step 3: Cross multiply
    12,407.40x = 18,613.90 × 5,011.88
  4. Step 4: Simplify right side
    12,407.40x = 93,290,633.13
  5. Step 5: Solve for x
    x = 93,290,633.13/12,407.40
  6. Step 6: Final answer
    x = 7,518.95

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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.