Home / 10,812.12-16,182.45-9,840.66

Finding the Fourth Proportional to 10,812.12, 16,182.45 and 9,840.66

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Solution

The fourth proportional to 10,812.12, 16,182.45 and 9,840.66 is: 14,728.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.12 : 16,182.45 = 9,840.66 : x
  2. Step 2: Convert to fraction form
    10,812.12/16,182.45 = 9,840.66/x
  3. Step 3: Cross multiply
    10,812.12x = 16,182.45 × 9,840.66
  4. Step 4: Simplify right side
    10,812.12x = 159,245,988.42
  5. Step 5: Solve for x
    x = 159,245,988.42/10,812.12
  6. Step 6: Final answer
    x = 14,728.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.