Home / 10,011.30-15,018.08-2,991.71

Finding the Fourth Proportional to 10,011.30, 15,018.08 and 2,991.71

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Solution

The fourth proportional to 10,011.30, 15,018.08 and 2,991.71 is: 4,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,011.30 : 15,018.08 = 2,991.71 : x
  2. Step 2: Convert to fraction form
    10,011.30/15,018.08 = 2,991.71/x
  3. Step 3: Cross multiply
    10,011.30x = 15,018.08 × 2,991.71
  4. Step 4: Simplify right side
    10,011.30x = 44,929,745.71
  5. Step 5: Solve for x
    x = 44,929,745.71/10,011.30
  6. Step 6: Final answer
    x = 4,487.90

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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.