Home / 42,270.97-63,407.62-12,688.81

Finding the Fourth Proportional to 42,270.97, 63,407.62 and 12,688.81

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Solution

The fourth proportional to 42,270.97, 63,407.62 and 12,688.81 is: 19,033.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,270.97 : 63,407.62 = 12,688.81 : x
  2. Step 2: Convert to fraction form
    42,270.97/63,407.62 = 12,688.81/x
  3. Step 3: Cross multiply
    42,270.97x = 63,407.62 × 12,688.81
  4. Step 4: Simplify right side
    42,270.97x = 804,567,242.73
  5. Step 5: Solve for x
    x = 804,567,242.73/42,270.97
  6. Step 6: Final answer
    x = 19,033.56

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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.