Home / 22,215.28-30,657.04-12,143.72

Finding the Fourth Proportional to 22,215.28, 30,657.04 and 12,143.72

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Solution

The fourth proportional to 22,215.28, 30,657.04 and 12,143.72 is: 16,758.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,215.28 : 30,657.04 = 12,143.72 : x
  2. Step 2: Convert to fraction form
    22,215.28/30,657.04 = 12,143.72/x
  3. Step 3: Cross multiply
    22,215.28x = 30,657.04 × 12,143.72
  4. Step 4: Simplify right side
    22,215.28x = 372,290,509.79
  5. Step 5: Solve for x
    x = 372,290,509.79/22,215.28
  6. Step 6: Final answer
    x = 16,758.31

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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.