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Finding the Fourth Proportional to 13,459.10, 20,180.55 and 6,898.10

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Solution

The fourth proportional to 13,459.10, 20,180.55 and 6,898.10 is: 10,343.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.10 : 20,180.55 = 6,898.10 : x
  2. Step 2: Convert to fraction form
    13,459.10/20,180.55 = 6,898.10/x
  3. Step 3: Cross multiply
    13,459.10x = 20,180.55 × 6,898.10
  4. Step 4: Simplify right side
    13,459.10x = 139,207,451.96
  5. Step 5: Solve for x
    x = 139,207,451.96/13,459.10
  6. Step 6: Final answer
    x = 10,343.00

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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.