Home / 13,099.50-18,065.34-9,750.78

Finding the Fourth Proportional to 13,099.50, 18,065.34 and 9,750.78

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Solution

The fourth proportional to 13,099.50, 18,065.34 and 9,750.78 is: 13,447.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.50 : 18,065.34 = 9,750.78 : x
  2. Step 2: Convert to fraction form
    13,099.50/18,065.34 = 9,750.78/x
  3. Step 3: Cross multiply
    13,099.50x = 18,065.34 × 9,750.78
  4. Step 4: Simplify right side
    13,099.50x = 176,151,155.97
  5. Step 5: Solve for x
    x = 176,151,155.97/13,099.50
  6. Step 6: Final answer
    x = 13,447.17

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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.