Home / 30,220.21-45,314.67-13,565.90

Finding the Fourth Proportional to 30,220.21, 45,314.67 and 13,565.90

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Solution

The fourth proportional to 30,220.21, 45,314.67 and 13,565.90 is: 20,341.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.21 : 45,314.67 = 13,565.90 : x
  2. Step 2: Convert to fraction form
    30,220.21/45,314.67 = 13,565.90/x
  3. Step 3: Cross multiply
    30,220.21x = 45,314.67 × 13,565.90
  4. Step 4: Simplify right side
    30,220.21x = 614,734,445.91
  5. Step 5: Solve for x
    x = 614,734,445.91/30,220.21
  6. Step 6: Final answer
    x = 20,341.83

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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.