Home / 12,482,642.70-18,723,964.05-10,215,161.10

Finding the Fourth Proportional to 12,482,642.70, 18,723,964.05 and 10,215,161.10

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Solution

The fourth proportional to 12,482,642.70, 18,723,964.05 and 10,215,161.10 is: 15,322,741.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482,642.70 : 18,723,964.05 = 10,215,161.10 : x
  2. Step 2: Convert to fraction form
    12,482,642.70/18,723,964.05 = 10,215,161.10/x
  3. Step 3: Cross multiply
    12,482,642.70x = 18,723,964.05 × 10,215,161.10
  4. Step 4: Simplify right side
    12,482,642.70x = 191,268,309,201,358.47
  5. Step 5: Solve for x
    x = 191,268,309,201,358.47/12,482,642.70
  6. Step 6: Final answer
    x = 15,322,741.65

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Double scale
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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.