Home / 13,247.02-18,280.91-7,278.60

Finding the Fourth Proportional to 13,247.02, 18,280.91 and 7,278.60

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Solution

The fourth proportional to 13,247.02, 18,280.91 and 7,278.60 is: 10,044.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.02 : 18,280.91 = 7,278.60 : x
  2. Step 2: Convert to fraction form
    13,247.02/18,280.91 = 7,278.60/x
  3. Step 3: Cross multiply
    13,247.02x = 18,280.91 × 7,278.60
  4. Step 4: Simplify right side
    13,247.02x = 133,059,431.53
  5. Step 5: Solve for x
    x = 133,059,431.53/13,247.02
  6. Step 6: Final answer
    x = 10,044.48

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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.