Home / 19,340,565.30-28,981,618.47-12,939,358.68

Finding the Fourth Proportional to 19,340,565.30, 28,981,618.47 and 12,939,358.68

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Solution

The fourth proportional to 19,340,565.30, 28,981,618.47 and 12,939,358.68 is: 19,389,482.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,340,565.30 : 28,981,618.47 = 12,939,358.68 : x
  2. Step 2: Convert to fraction form
    19,340,565.30/28,981,618.47 = 12,939,358.68/x
  3. Step 3: Cross multiply
    19,340,565.30x = 28,981,618.47 × 12,939,358.68
  4. Step 4: Simplify right side
    19,340,565.30x = 375,003,556,510,242.81
  5. Step 5: Solve for x
    x = 375,003,556,510,242.81/19,340,565.30
  6. Step 6: Final answer
    x = 19,389,482.71

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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.