Home / 42,243.92-63,365.16-12,661.28

Finding the Fourth Proportional to 42,243.92, 63,365.16 and 12,661.28

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Solution

The fourth proportional to 42,243.92, 63,365.16 and 12,661.28 is: 18,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,243.92 : 63,365.16 = 12,661.28 : x
  2. Step 2: Convert to fraction form
    42,243.92/63,365.16 = 12,661.28/x
  3. Step 3: Cross multiply
    42,243.92x = 63,365.16 × 12,661.28
  4. Step 4: Simplify right side
    42,243.92x = 802,284,033.00
  5. Step 5: Solve for x
    x = 802,284,033.00/42,243.92
  6. Step 6: Final answer
    x = 18,991.70

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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.