Home / 12,126,412.80-18,189,619.20-10,496,660.40

Finding the Fourth Proportional to 12,126,412.80, 18,189,619.20 and 10,496,660.40

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Solution

The fourth proportional to 12,126,412.80, 18,189,619.20 and 10,496,660.40 is: 15,744,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126,412.80 : 18,189,619.20 = 10,496,660.40 : x
  2. Step 2: Convert to fraction form
    12,126,412.80/18,189,619.20 = 10,496,660.40/x
  3. Step 3: Cross multiply
    12,126,412.80x = 18,189,619.20 × 10,496,660.40
  4. Step 4: Simplify right side
    12,126,412.80x = 190,930,255,547,719.69
  5. Step 5: Solve for x
    x = 190,930,255,547,719.69/12,126,412.80
  6. Step 6: Final answer
    x = 15,744,990.60

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Similar ratio
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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.