Home / 28,277.82-39,023.40-15,702.57

Finding the Fourth Proportional to 28,277.82, 39,023.40 and 15,702.57

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Solution

The fourth proportional to 28,277.82, 39,023.40 and 15,702.57 is: 21,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,277.82 : 39,023.40 = 15,702.57 : x
  2. Step 2: Convert to fraction form
    28,277.82/39,023.40 = 15,702.57/x
  3. Step 3: Cross multiply
    28,277.82x = 39,023.40 × 15,702.57
  4. Step 4: Simplify right side
    28,277.82x = 612,767,670.14
  5. Step 5: Solve for x
    x = 612,767,670.14/28,277.82
  6. Step 6: Final answer
    x = 21,669.55

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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.