Home / 13,565.03-20,320.20-9,136.35

Finding the Fourth Proportional to 13,565.03, 20,320.20 and 9,136.35

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Solution

The fourth proportional to 13,565.03, 20,320.20 and 9,136.35 is: 13,686.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.03 : 20,320.20 = 9,136.35 : x
  2. Step 2: Convert to fraction form
    13,565.03/20,320.20 = 9,136.35/x
  3. Step 3: Cross multiply
    13,565.03x = 20,320.20 × 9,136.35
  4. Step 4: Simplify right side
    13,565.03x = 185,652,459.27
  5. Step 5: Solve for x
    x = 185,652,459.27/13,565.03
  6. Step 6: Final answer
    x = 13,686.11

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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.