Home / 10,210.98-15,302.11-8,121.72

Finding the Fourth Proportional to 10,210.98, 15,302.11 and 8,121.72

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Solution

The fourth proportional to 10,210.98, 15,302.11 and 8,121.72 is: 12,171.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,210.98 : 15,302.11 = 8,121.72 : x
  2. Step 2: Convert to fraction form
    10,210.98/15,302.11 = 8,121.72/x
  3. Step 3: Cross multiply
    10,210.98x = 15,302.11 × 8,121.72
  4. Step 4: Simplify right side
    10,210.98x = 124,279,452.83
  5. Step 5: Solve for x
    x = 124,279,452.83/10,210.98
  6. Step 6: Final answer
    x = 12,171.16

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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.