Home / 40,015.18-55,155.09-28,377.28

Finding the Fourth Proportional to 40,015.18, 55,155.09 and 28,377.28

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Solution

The fourth proportional to 40,015.18, 55,155.09 and 28,377.28 is: 39,113.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,015.18 : 55,155.09 = 28,377.28 : x
  2. Step 2: Convert to fraction form
    40,015.18/55,155.09 = 28,377.28/x
  3. Step 3: Cross multiply
    40,015.18x = 55,155.09 × 28,377.28
  4. Step 4: Simplify right side
    40,015.18x = 1,565,151,432.36
  5. Step 5: Solve for x
    x = 1,565,151,432.36/40,015.18
  6. Step 6: Final answer
    x = 39,113.94

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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.