Home / 42,646.28-63,958.98-18,940.76

Finding the Fourth Proportional to 42,646.28, 63,958.98 and 18,940.76

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Solution

The fourth proportional to 42,646.28, 63,958.98 and 18,940.76 is: 28,406.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,646.28 : 63,958.98 = 18,940.76 : x
  2. Step 2: Convert to fraction form
    42,646.28/63,958.98 = 18,940.76/x
  3. Step 3: Cross multiply
    42,646.28x = 63,958.98 × 18,940.76
  4. Step 4: Simplify right side
    42,646.28x = 1,211,431,690.02
  5. Step 5: Solve for x
    x = 1,211,431,690.02/42,646.28
  6. Step 6: Final answer
    x = 28,406.50

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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.