Home / 13,246.72-18,280.70-7,278.64

Finding the Fourth Proportional to 13,246.72, 18,280.70 and 7,278.64

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Solution

The fourth proportional to 13,246.72, 18,280.70 and 7,278.64 is: 10,044.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,246.72 : 18,280.70 = 7,278.64 : x
  2. Step 2: Convert to fraction form
    13,246.72/18,280.70 = 7,278.64/x
  3. Step 3: Cross multiply
    13,246.72x = 18,280.70 × 7,278.64
  4. Step 4: Simplify right side
    13,246.72x = 133,058,552.15
  5. Step 5: Solve for x
    x = 133,058,552.15/13,246.72
  6. Step 6: Final answer
    x = 10,044.64

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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.