Home / 13,247.09-18,280.98-7,278.75

Finding the Fourth Proportional to 13,247.09, 18,280.98 and 7,278.75

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Solution

The fourth proportional to 13,247.09, 18,280.98 and 7,278.75 is: 10,044.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.09 : 18,280.98 = 7,278.75 : x
  2. Step 2: Convert to fraction form
    13,247.09/18,280.98 = 7,278.75/x
  3. Step 3: Cross multiply
    13,247.09x = 18,280.98 × 7,278.75
  4. Step 4: Simplify right side
    13,247.09x = 133,062,683.18
  5. Step 5: Solve for x
    x = 133,062,683.18/13,247.09
  6. Step 6: Final answer
    x = 10,044.67

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Double scale
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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.