Home / 12,117.15-18,175.73-10,513.35

Finding the Fourth Proportional to 12,117.15, 18,175.73 and 10,513.35

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Solution

The fourth proportional to 12,117.15, 18,175.73 and 10,513.35 is: 15,770.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.15 : 18,175.73 = 10,513.35 : x
  2. Step 2: Convert to fraction form
    12,117.15/18,175.73 = 10,513.35/x
  3. Step 3: Cross multiply
    12,117.15x = 18,175.73 × 10,513.35
  4. Step 4: Simplify right side
    12,117.15x = 191,087,758.43
  5. Step 5: Solve for x
    x = 191,087,758.43/12,117.15
  6. Step 6: Final answer
    x = 15,770.03

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.