Home / 42,503.40-63,755.10-20,311.56

Finding the Fourth Proportional to 42,503.40, 63,755.10 and 20,311.56

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Solution

The fourth proportional to 42,503.40, 63,755.10 and 20,311.56 is: 30,467.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,503.40 : 63,755.10 = 20,311.56 : x
  2. Step 2: Convert to fraction form
    42,503.40/63,755.10 = 20,311.56/x
  3. Step 3: Cross multiply
    42,503.40x = 63,755.10 × 20,311.56
  4. Step 4: Simplify right side
    42,503.40x = 1,294,965,538.96
  5. Step 5: Solve for x
    x = 1,294,965,538.96/42,503.40
  6. Step 6: Final answer
    x = 30,467.34

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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.