Home / 42,958.28-64,393.45-18,012.78

Finding the Fourth Proportional to 42,958.28, 64,393.45 and 18,012.78

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Solution

The fourth proportional to 42,958.28, 64,393.45 and 18,012.78 is: 27,000.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,958.28 : 64,393.45 = 18,012.78 : x
  2. Step 2: Convert to fraction form
    42,958.28/64,393.45 = 18,012.78/x
  3. Step 3: Cross multiply
    42,958.28x = 64,393.45 × 18,012.78
  4. Step 4: Simplify right side
    42,958.28x = 1,159,905,003.26
  5. Step 5: Solve for x
    x = 1,159,905,003.26/42,958.28
  6. Step 6: Final answer
    x = 27,000.73

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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.