Home / 13,363.60-18,414.12-9,389.20

Finding the Fourth Proportional to 13,363.60, 18,414.12 and 9,389.20

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Solution

The fourth proportional to 13,363.60, 18,414.12 and 9,389.20 is: 12,937.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.60 : 18,414.12 = 9,389.20 : x
  2. Step 2: Convert to fraction form
    13,363.60/18,414.12 = 9,389.20/x
  3. Step 3: Cross multiply
    13,363.60x = 18,414.12 × 9,389.20
  4. Step 4: Simplify right side
    13,363.60x = 172,893,855.50
  5. Step 5: Solve for x
    x = 172,893,855.50/13,363.60
  6. Step 6: Final answer
    x = 12,937.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.