Home / 28,078.24-38,747.84-15,502.90

Finding the Fourth Proportional to 28,078.24, 38,747.84 and 15,502.90

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Solution

The fourth proportional to 28,078.24, 38,747.84 and 15,502.90 is: 21,393.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.24 : 38,747.84 = 15,502.90 : x
  2. Step 2: Convert to fraction form
    28,078.24/38,747.84 = 15,502.90/x
  3. Step 3: Cross multiply
    28,078.24x = 38,747.84 × 15,502.90
  4. Step 4: Simplify right side
    28,078.24x = 600,703,888.74
  5. Step 5: Solve for x
    x = 600,703,888.74/28,078.24
  6. Step 6: Final answer
    x = 21,393.93

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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.