Home / 13,747.38-18,965.16-8,440.26

Finding the Fourth Proportional to 13,747.38, 18,965.16 and 8,440.26

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Solution

The fourth proportional to 13,747.38, 18,965.16 and 8,440.26 is: 11,643.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.38 : 18,965.16 = 8,440.26 : x
  2. Step 2: Convert to fraction form
    13,747.38/18,965.16 = 8,440.26/x
  3. Step 3: Cross multiply
    13,747.38x = 18,965.16 × 8,440.26
  4. Step 4: Simplify right side
    13,747.38x = 160,070,881.34
  5. Step 5: Solve for x
    x = 160,070,881.34/13,747.38
  6. Step 6: Final answer
    x = 11,643.74

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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.