Home / 13,127.64-18,119.89-7,465.44

Finding the Fourth Proportional to 13,127.64, 18,119.89 and 7,465.44

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Solution

The fourth proportional to 13,127.64, 18,119.89 and 7,465.44 is: 10,304.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.64 : 18,119.89 = 7,465.44 : x
  2. Step 2: Convert to fraction form
    13,127.64/18,119.89 = 7,465.44/x
  3. Step 3: Cross multiply
    13,127.64x = 18,119.89 × 7,465.44
  4. Step 4: Simplify right side
    13,127.64x = 135,273,048.38
  5. Step 5: Solve for x
    x = 135,273,048.38/13,127.64
  6. Step 6: Final answer
    x = 10,304.45

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Half scale
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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.