Home / 13,722.32-20,565.40-7,485.04

Finding the Fourth Proportional to 13,722.32, 20,565.40 and 7,485.04

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Solution

The fourth proportional to 13,722.32, 20,565.40 and 7,485.04 is: 11,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.32 : 20,565.40 = 7,485.04 : x
  2. Step 2: Convert to fraction form
    13,722.32/20,565.40 = 7,485.04/x
  3. Step 3: Cross multiply
    13,722.32x = 20,565.40 × 7,485.04
  4. Step 4: Simplify right side
    13,722.32x = 153,932,841.62
  5. Step 5: Solve for x
    x = 153,932,841.62/13,722.32
  6. Step 6: Final answer
    x = 11,217.70

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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.