Home / 20,918,959.92-31,380,244.16-5,772,891.42

Finding the Fourth Proportional to 20,918,959.92, 31,380,244.16 and 5,772,891.42

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Solution

The fourth proportional to 20,918,959.92, 31,380,244.16 and 5,772,891.42 is: 8,659,835.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918,959.92 : 31,380,244.16 = 5,772,891.42 : x
  2. Step 2: Convert to fraction form
    20,918,959.92/31,380,244.16 = 5,772,891.42/x
  3. Step 3: Cross multiply
    20,918,959.92x = 31,380,244.16 × 5,772,891.42
  4. Step 4: Simplify right side
    20,918,959.92x = 181,154,742,239,904.66
  5. Step 5: Solve for x
    x = 181,154,742,239,904.66/20,918,959.92
  6. Step 6: Final answer
    x = 8,659,835.05

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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.