Home / 42,701.49-63,998.78-20,510.73

Finding the Fourth Proportional to 42,701.49, 63,998.78 and 20,510.73

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Solution

The fourth proportional to 42,701.49, 63,998.78 and 20,510.73 is: 30,740.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,701.49 : 63,998.78 = 20,510.73 : x
  2. Step 2: Convert to fraction form
    42,701.49/63,998.78 = 20,510.73/x
  3. Step 3: Cross multiply
    42,701.49x = 63,998.78 × 20,510.73
  4. Step 4: Simplify right side
    42,701.49x = 1,312,661,594.36
  5. Step 5: Solve for x
    x = 1,312,661,594.36/42,701.49
  6. Step 6: Final answer
    x = 30,740.42

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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.