Home / 28,155.48-38,854.24-15,580.32

Finding the Fourth Proportional to 28,155.48, 38,854.24 and 15,580.32

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Solution

The fourth proportional to 28,155.48, 38,854.24 and 15,580.32 is: 21,500.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.48 : 38,854.24 = 15,580.32 : x
  2. Step 2: Convert to fraction form
    28,155.48/38,854.24 = 15,580.32/x
  3. Step 3: Cross multiply
    28,155.48x = 38,854.24 × 15,580.32
  4. Step 4: Simplify right side
    28,155.48x = 605,361,492.56
  5. Step 5: Solve for x
    x = 605,361,492.56/28,155.48
  6. Step 6: Final answer
    x = 21,500.66

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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.