Home / 18,925.56-28,398.06-8,402.79

Finding the Fourth Proportional to 18,925.56, 28,398.06 and 8,402.79

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Solution

The fourth proportional to 18,925.56, 28,398.06 and 8,402.79 is: 12,608.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.56 : 28,398.06 = 8,402.79 : x
  2. Step 2: Convert to fraction form
    18,925.56/28,398.06 = 8,402.79/x
  3. Step 3: Cross multiply
    18,925.56x = 28,398.06 × 8,402.79
  4. Step 4: Simplify right side
    18,925.56x = 238,622,934.59
  5. Step 5: Solve for x
    x = 238,622,934.59/18,925.56
  6. Step 6: Final answer
    x = 12,608.50

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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.