Home / 19,034.25-26,278.79-12,421.77

Finding the Fourth Proportional to 19,034.25, 26,278.79 and 12,421.77

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Solution

The fourth proportional to 19,034.25, 26,278.79 and 12,421.77 is: 17,149.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,034.25 : 26,278.79 = 12,421.77 : x
  2. Step 2: Convert to fraction form
    19,034.25/26,278.79 = 12,421.77/x
  3. Step 3: Cross multiply
    19,034.25x = 26,278.79 × 12,421.77
  4. Step 4: Simplify right side
    19,034.25x = 326,429,023.15
  5. Step 5: Solve for x
    x = 326,429,023.15/19,034.25
  6. Step 6: Final answer
    x = 17,149.56

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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.