Home / 13,343.20-18,422.16-8,565.19

Finding the Fourth Proportional to 13,343.20, 18,422.16 and 8,565.19

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Solution

The fourth proportional to 13,343.20, 18,422.16 and 8,565.19 is: 11,825.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,343.20 : 18,422.16 = 8,565.19 : x
  2. Step 2: Convert to fraction form
    13,343.20/18,422.16 = 8,565.19/x
  3. Step 3: Cross multiply
    13,343.20x = 18,422.16 × 8,565.19
  4. Step 4: Simplify right side
    13,343.20x = 157,789,300.61
  5. Step 5: Solve for x
    x = 157,789,300.61/13,343.20
  6. Step 6: Final answer
    x = 11,825.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.