Home / 20,742,005.80-31,113,008.70-17,151,826.60

Finding the Fourth Proportional to 20,742,005.80, 31,113,008.70 and 17,151,826.60

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Solution

The fourth proportional to 20,742,005.80, 31,113,008.70 and 17,151,826.60 is: 25,727,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,005.80 : 31,113,008.70 = 17,151,826.60 : x
  2. Step 2: Convert to fraction form
    20,742,005.80/31,113,008.70 = 17,151,826.60/x
  3. Step 3: Cross multiply
    20,742,005.80x = 31,113,008.70 × 17,151,826.60
  4. Step 4: Simplify right side
    20,742,005.80x = 533,644,930,226,691.44
  5. Step 5: Solve for x
    x = 533,644,930,226,691.44/20,742,005.80
  6. Step 6: Final answer
    x = 25,727,739.90

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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.