Home / 20,139,309.60-30,208,964.40-18,123,770.40

Finding the Fourth Proportional to 20,139,309.60, 30,208,964.40 and 18,123,770.40

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Solution

The fourth proportional to 20,139,309.60, 30,208,964.40 and 18,123,770.40 is: 27,185,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,309.60 : 30,208,964.40 = 18,123,770.40 : x
  2. Step 2: Convert to fraction form
    20,139,309.60/30,208,964.40 = 18,123,770.40/x
  3. Step 3: Cross multiply
    20,139,309.60x = 30,208,964.40 × 18,123,770.40
  4. Step 4: Simplify right side
    20,139,309.60x = 547,500,334,807,373.69
  5. Step 5: Solve for x
    x = 547,500,334,807,373.69/20,139,309.60
  6. Step 6: Final answer
    x = 27,185,655.60

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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.