Home / 42,243.07-63,356.54-12,660.90

Finding the Fourth Proportional to 42,243.07, 63,356.54 and 12,660.90

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Solution

The fourth proportional to 42,243.07, 63,356.54 and 12,660.90 is: 18,988.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,243.07 : 63,356.54 = 12,660.90 : x
  2. Step 2: Convert to fraction form
    42,243.07/63,356.54 = 12,660.90/x
  3. Step 3: Cross multiply
    42,243.07x = 63,356.54 × 12,660.90
  4. Step 4: Simplify right side
    42,243.07x = 802,150,753.98
  5. Step 5: Solve for x
    x = 802,150,753.98/42,243.07
  6. Step 6: Final answer
    x = 18,988.93

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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.