Home / 42,066.36-63,110.88-13,990.95

Finding the Fourth Proportional to 42,066.36, 63,110.88 and 13,990.95

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Solution

The fourth proportional to 42,066.36, 63,110.88 and 13,990.95 is: 20,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,066.36 : 63,110.88 = 13,990.95 : x
  2. Step 2: Convert to fraction form
    42,066.36/63,110.88 = 13,990.95/x
  3. Step 3: Cross multiply
    42,066.36x = 63,110.88 × 13,990.95
  4. Step 4: Simplify right side
    42,066.36x = 882,981,166.54
  5. Step 5: Solve for x
    x = 882,981,166.54/42,066.36
  6. Step 6: Final answer
    x = 20,990.20

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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.