Home / 12,612.10-18,918.15-5,857.01

Finding the Fourth Proportional to 12,612.10, 18,918.15 and 5,857.01

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Solution

The fourth proportional to 12,612.10, 18,918.15 and 5,857.01 is: 8,785.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.10 : 18,918.15 = 5,857.01 : x
  2. Step 2: Convert to fraction form
    12,612.10/18,918.15 = 5,857.01/x
  3. Step 3: Cross multiply
    12,612.10x = 18,918.15 × 5,857.01
  4. Step 4: Simplify right side
    12,612.10x = 110,803,699.14
  5. Step 5: Solve for x
    x = 110,803,699.14/12,612.10
  6. Step 6: Final answer
    x = 8,785.51

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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.