Home / 10,103.04-15,080.16-8,920.80

Finding the Fourth Proportional to 10,103.04, 15,080.16 and 8,920.80

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Solution

The fourth proportional to 10,103.04, 15,080.16 and 8,920.80 is: 13,315.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,103.04 : 15,080.16 = 8,920.80 : x
  2. Step 2: Convert to fraction form
    10,103.04/15,080.16 = 8,920.80/x
  3. Step 3: Cross multiply
    10,103.04x = 15,080.16 × 8,920.80
  4. Step 4: Simplify right side
    10,103.04x = 134,527,091.33
  5. Step 5: Solve for x
    x = 134,527,091.33/10,103.04
  6. Step 6: Final answer
    x = 13,315.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.