Home / 42,409.40-63,517.19-20,238.35

Finding the Fourth Proportional to 42,409.40, 63,517.19 and 20,238.35

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Solution

The fourth proportional to 42,409.40, 63,517.19 and 20,238.35 is: 30,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,409.40 : 63,517.19 = 20,238.35 : x
  2. Step 2: Convert to fraction form
    42,409.40/63,517.19 = 20,238.35/x
  3. Step 3: Cross multiply
    42,409.40x = 63,517.19 × 20,238.35
  4. Step 4: Simplify right side
    42,409.40x = 1,285,482,703.46
  5. Step 5: Solve for x
    x = 1,285,482,703.46/42,409.40
  6. Step 6: Final answer
    x = 30,311.27

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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.