Home / 15,124.42-20,872.90-8,412.22

Finding the Fourth Proportional to 15,124.42, 20,872.90 and 8,412.22

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Solution

The fourth proportional to 15,124.42, 20,872.90 and 8,412.22 is: 11,609.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.42 : 20,872.90 = 8,412.22 : x
  2. Step 2: Convert to fraction form
    15,124.42/20,872.90 = 8,412.22/x
  3. Step 3: Cross multiply
    15,124.42x = 20,872.90 × 8,412.22
  4. Step 4: Simplify right side
    15,124.42x = 175,587,426.84
  5. Step 5: Solve for x
    x = 175,587,426.84/15,124.42
  6. Step 6: Final answer
    x = 11,609.53

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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.