Home / 12,079.50-16,669.76-7,047.20

Finding the Fourth Proportional to 12,079.50, 16,669.76 and 7,047.20

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Solution

The fourth proportional to 12,079.50, 16,669.76 and 7,047.20 is: 9,725.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.50 : 16,669.76 = 7,047.20 : x
  2. Step 2: Convert to fraction form
    12,079.50/16,669.76 = 7,047.20/x
  3. Step 3: Cross multiply
    12,079.50x = 16,669.76 × 7,047.20
  4. Step 4: Simplify right side
    12,079.50x = 117,475,132.67
  5. Step 5: Solve for x
    x = 117,475,132.67/12,079.50
  6. Step 6: Final answer
    x = 9,725.17

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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.