Home / 42,644.28-63,955.98-18,938.76

Finding the Fourth Proportional to 42,644.28, 63,955.98 and 18,938.76

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Solution

The fourth proportional to 42,644.28, 63,955.98 and 18,938.76 is: 28,403.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,644.28 : 63,955.98 = 18,938.76 : x
  2. Step 2: Convert to fraction form
    42,644.28/63,955.98 = 18,938.76/x
  3. Step 3: Cross multiply
    42,644.28x = 63,955.98 × 18,938.76
  4. Step 4: Simplify right side
    42,644.28x = 1,211,246,955.78
  5. Step 5: Solve for x
    x = 1,211,246,955.78/42,644.28
  6. Step 6: Final answer
    x = 28,403.50

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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.