Home / 10,102.80-15,147.68-4,257.84

Finding the Fourth Proportional to 10,102.80, 15,147.68 and 4,257.84

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Solution

The fourth proportional to 10,102.80, 15,147.68 and 4,257.84 is: 6,384.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,102.80 : 15,147.68 = 4,257.84 : x
  2. Step 2: Convert to fraction form
    10,102.80/15,147.68 = 4,257.84/x
  3. Step 3: Cross multiply
    10,102.80x = 15,147.68 × 4,257.84
  4. Step 4: Simplify right side
    10,102.80x = 64,496,397.81
  5. Step 5: Solve for x
    x = 64,496,397.81/10,102.80
  6. Step 6: Final answer
    x = 6,384.01

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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.