Home / 12,543.08-18,814.64-5,146.16

Finding the Fourth Proportional to 12,543.08, 18,814.64 and 5,146.16

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Solution

The fourth proportional to 12,543.08, 18,814.64 and 5,146.16 is: 7,719.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.08 : 18,814.64 = 5,146.16 : x
  2. Step 2: Convert to fraction form
    12,543.08/18,814.64 = 5,146.16/x
  3. Step 3: Cross multiply
    12,543.08x = 18,814.64 × 5,146.16
  4. Step 4: Simplify right side
    12,543.08x = 96,823,147.78
  5. Step 5: Solve for x
    x = 96,823,147.78/12,543.08
  6. Step 6: Final answer
    x = 7,719.25

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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.