Home / 42,621.80-63,932.70-13,039.70

Finding the Fourth Proportional to 42,621.80, 63,932.70 and 13,039.70

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Solution

The fourth proportional to 42,621.80, 63,932.70 and 13,039.70 is: 19,559.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,621.80 : 63,932.70 = 13,039.70 : x
  2. Step 2: Convert to fraction form
    42,621.80/63,932.70 = 13,039.70/x
  3. Step 3: Cross multiply
    42,621.80x = 63,932.70 × 13,039.70
  4. Step 4: Simplify right side
    42,621.80x = 833,663,228.19
  5. Step 5: Solve for x
    x = 833,663,228.19/42,621.80
  6. Step 6: Final answer
    x = 19,559.55

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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.