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Finding the Fourth Proportional to 12,114.68, 16,718.12 and 7,079.67

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Solution

The fourth proportional to 12,114.68, 16,718.12 and 7,079.67 is: 9,769.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,114.68 : 16,718.12 = 7,079.67 : x
  2. Step 2: Convert to fraction form
    12,114.68/16,718.12 = 7,079.67/x
  3. Step 3: Cross multiply
    12,114.68x = 16,718.12 × 7,079.67
  4. Step 4: Simplify right side
    12,114.68x = 118,358,737.22
  5. Step 5: Solve for x
    x = 118,358,737.22/12,114.68
  6. Step 6: Final answer
    x = 9,769.86

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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.