Home / 15,231.03-21,023.28-8,859.12

Finding the Fourth Proportional to 15,231.03, 21,023.28 and 8,859.12

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Solution

The fourth proportional to 15,231.03, 21,023.28 and 8,859.12 is: 12,228.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.03 : 21,023.28 = 8,859.12 : x
  2. Step 2: Convert to fraction form
    15,231.03/21,023.28 = 8,859.12/x
  3. Step 3: Cross multiply
    15,231.03x = 21,023.28 × 8,859.12
  4. Step 4: Simplify right side
    15,231.03x = 186,247,760.31
  5. Step 5: Solve for x
    x = 186,247,760.31/15,231.03
  6. Step 6: Final answer
    x = 12,228.18

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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.