Home / 20,739,901.20-31,109,851.80-19,900,093.20

Finding the Fourth Proportional to 20,739,901.20, 31,109,851.80 and 19,900,093.20

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Solution

The fourth proportional to 20,739,901.20, 31,109,851.80 and 19,900,093.20 is: 29,850,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,901.20 : 31,109,851.80 = 19,900,093.20 : x
  2. Step 2: Convert to fraction form
    20,739,901.20/31,109,851.80 = 19,900,093.20/x
  3. Step 3: Cross multiply
    20,739,901.20x = 31,109,851.80 × 19,900,093.20
  4. Step 4: Simplify right side
    20,739,901.20x = 619,088,950,258,187.75
  5. Step 5: Solve for x
    x = 619,088,950,258,187.75/20,739,901.20
  6. Step 6: Final answer
    x = 29,850,139.80

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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.