Home / 18,998.38-26,221.38-12,526.64

Finding the Fourth Proportional to 18,998.38, 26,221.38 and 12,526.64

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Solution

The fourth proportional to 18,998.38, 26,221.38 and 12,526.64 is: 17,289.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.38 : 26,221.38 = 12,526.64 : x
  2. Step 2: Convert to fraction form
    18,998.38/26,221.38 = 12,526.64/x
  3. Step 3: Cross multiply
    18,998.38x = 26,221.38 × 12,526.64
  4. Step 4: Simplify right side
    18,998.38x = 328,465,728.01
  5. Step 5: Solve for x
    x = 328,465,728.01/18,998.38
  6. Step 6: Final answer
    x = 17,289.14

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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.