Home / 12,114.87-16,718.60-7,079.30

Finding the Fourth Proportional to 12,114.87, 16,718.60 and 7,079.30

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Solution

The fourth proportional to 12,114.87, 16,718.60 and 7,079.30 is: 9,769.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,114.87 : 16,718.60 = 7,079.30 : x
  2. Step 2: Convert to fraction form
    12,114.87/16,718.60 = 7,079.30/x
  3. Step 3: Cross multiply
    12,114.87x = 16,718.60 × 7,079.30
  4. Step 4: Simplify right side
    12,114.87x = 118,355,981.78
  5. Step 5: Solve for x
    x = 118,355,981.78/12,114.87
  6. Step 6: Final answer
    x = 9,769.48

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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.