Home / 28,064.97-38,712.83-20,502.05

Finding the Fourth Proportional to 28,064.97, 38,712.83 and 20,502.05

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Solution

The fourth proportional to 28,064.97, 38,712.83 and 20,502.05 is: 28,280.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,064.97 : 38,712.83 = 20,502.05 : x
  2. Step 2: Convert to fraction form
    28,064.97/38,712.83 = 20,502.05/x
  3. Step 3: Cross multiply
    28,064.97x = 38,712.83 × 20,502.05
  4. Step 4: Simplify right side
    28,064.97x = 793,692,376.30
  5. Step 5: Solve for x
    x = 793,692,376.30/28,064.97
  6. Step 6: Final answer
    x = 28,280.54

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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.