Home / 31,092.96-42,803.40-28,099.68

Finding the Fourth Proportional to 31,092.96, 42,803.40 and 28,099.68

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Solution

The fourth proportional to 31,092.96, 42,803.40 and 28,099.68 is: 38,682.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,092.96 : 42,803.40 = 28,099.68 : x
  2. Step 2: Convert to fraction form
    31,092.96/42,803.40 = 28,099.68/x
  3. Step 3: Cross multiply
    31,092.96x = 42,803.40 × 28,099.68
  4. Step 4: Simplify right side
    31,092.96x = 1,202,761,842.91
  5. Step 5: Solve for x
    x = 1,202,761,842.91/31,092.96
  6. Step 6: Final answer
    x = 38,682.77

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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.