Home / 13,245.50-18,263.76-8,459.12

Finding the Fourth Proportional to 13,245.50, 18,263.76 and 8,459.12

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Solution

The fourth proportional to 13,245.50, 18,263.76 and 8,459.12 is: 11,663.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.50 : 18,263.76 = 8,459.12 : x
  2. Step 2: Convert to fraction form
    13,245.50/18,263.76 = 8,459.12/x
  3. Step 3: Cross multiply
    13,245.50x = 18,263.76 × 8,459.12
  4. Step 4: Simplify right side
    13,245.50x = 154,495,337.49
  5. Step 5: Solve for x
    x = 154,495,337.49/13,245.50
  6. Step 6: Final answer
    x = 11,663.99

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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.