Home / 28,495.13-42,722.93-12,691.78

Finding the Fourth Proportional to 28,495.13, 42,722.93 and 12,691.78

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Solution

The fourth proportional to 28,495.13, 42,722.93 and 12,691.78 is: 19,028.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.13 : 42,722.93 = 12,691.78 : x
  2. Step 2: Convert to fraction form
    28,495.13/42,722.93 = 12,691.78/x
  3. Step 3: Cross multiply
    28,495.13x = 42,722.93 × 12,691.78
  4. Step 4: Simplify right side
    28,495.13x = 542,229,875.51
  5. Step 5: Solve for x
    x = 542,229,875.51/28,495.13
  6. Step 6: Final answer
    x = 19,028.86

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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.