Home / 10,011.90-15,017.85-8,408.10

Finding the Fourth Proportional to 10,011.90, 15,017.85 and 8,408.10

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Solution

The fourth proportional to 10,011.90, 15,017.85 and 8,408.10 is: 12,612.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,011.90 : 15,017.85 = 8,408.10 : x
  2. Step 2: Convert to fraction form
    10,011.90/15,017.85 = 8,408.10/x
  3. Step 3: Cross multiply
    10,011.90x = 15,017.85 × 8,408.10
  4. Step 4: Simplify right side
    10,011.90x = 126,271,584.59
  5. Step 5: Solve for x
    x = 126,271,584.59/10,011.90
  6. Step 6: Final answer
    x = 12,612.15

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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.