Home / 28,089.89-42,118.52-13,298.68

Finding the Fourth Proportional to 28,089.89, 42,118.52 and 13,298.68

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Solution

The fourth proportional to 28,089.89, 42,118.52 and 13,298.68 is: 19,940.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,089.89 : 42,118.52 = 13,298.68 : x
  2. Step 2: Convert to fraction form
    28,089.89/42,118.52 = 13,298.68/x
  3. Step 3: Cross multiply
    28,089.89x = 42,118.52 × 13,298.68
  4. Step 4: Simplify right side
    28,089.89x = 560,120,508.96
  5. Step 5: Solve for x
    x = 560,120,508.96/28,089.89
  6. Step 6: Final answer
    x = 19,940.29

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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.