Home / 20,775,547.20-31,163,320.80-13,122,796.80

Finding the Fourth Proportional to 20,775,547.20, 31,163,320.80 and 13,122,796.80

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Solution

The fourth proportional to 20,775,547.20, 31,163,320.80 and 13,122,796.80 is: 19,684,195.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,547.20 : 31,163,320.80 = 13,122,796.80 : x
  2. Step 2: Convert to fraction form
    20,775,547.20/31,163,320.80 = 13,122,796.80/x
  3. Step 3: Cross multiply
    20,775,547.20x = 31,163,320.80 × 13,122,796.80
  4. Step 4: Simplify right side
    20,775,547.20x = 408,949,926,471,613.50
  5. Step 5: Solve for x
    x = 408,949,926,471,613.50/20,775,547.20
  6. Step 6: Final answer
    x = 19,684,195.20

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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.