Home / 15,186.42-20,957.76-8,812.53

Finding the Fourth Proportional to 15,186.42, 20,957.76 and 8,812.53

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Solution

The fourth proportional to 15,186.42, 20,957.76 and 8,812.53 is: 12,161.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.42 : 20,957.76 = 8,812.53 : x
  2. Step 2: Convert to fraction form
    15,186.42/20,957.76 = 8,812.53/x
  3. Step 3: Cross multiply
    15,186.42x = 20,957.76 × 8,812.53
  4. Step 4: Simplify right side
    15,186.42x = 184,690,888.73
  5. Step 5: Solve for x
    x = 184,690,888.73/15,186.42
  6. Step 6: Final answer
    x = 12,161.58

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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.