Home / 13,170.77-18,174.47-7,506.44

Finding the Fourth Proportional to 13,170.77, 18,174.47 and 7,506.44

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Solution

The fourth proportional to 13,170.77, 18,174.47 and 7,506.44 is: 10,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.77 : 18,174.47 = 7,506.44 : x
  2. Step 2: Convert to fraction form
    13,170.77/18,174.47 = 7,506.44/x
  3. Step 3: Cross multiply
    13,170.77x = 18,174.47 × 7,506.44
  4. Step 4: Simplify right side
    13,170.77x = 136,425,440.18
  5. Step 5: Solve for x
    x = 136,425,440.18/13,170.77
  6. Step 6: Final answer
    x = 10,358.20

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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.