Home / 12,117.30-18,175.95-5,556.30

Finding the Fourth Proportional to 12,117.30, 18,175.95 and 5,556.30

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Solution

The fourth proportional to 12,117.30, 18,175.95 and 5,556.30 is: 8,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.30 : 18,175.95 = 5,556.30 : x
  2. Step 2: Convert to fraction form
    12,117.30/18,175.95 = 5,556.30/x
  3. Step 3: Cross multiply
    12,117.30x = 18,175.95 × 5,556.30
  4. Step 4: Simplify right side
    12,117.30x = 100,991,030.99
  5. Step 5: Solve for x
    x = 100,991,030.99/12,117.30
  6. Step 6: Final answer
    x = 8,334.45

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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.