Home / 28,277.31-39,021.15-15,701.25

Finding the Fourth Proportional to 28,277.31, 39,021.15 and 15,701.25

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Solution

The fourth proportional to 28,277.31, 39,021.15 and 15,701.25 is: 21,666.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,277.31 : 39,021.15 = 15,701.25 : x
  2. Step 2: Convert to fraction form
    28,277.31/39,021.15 = 15,701.25/x
  3. Step 3: Cross multiply
    28,277.31x = 39,021.15 × 15,701.25
  4. Step 4: Simplify right side
    28,277.31x = 612,680,831.44
  5. Step 5: Solve for x
    x = 612,680,831.44/28,277.31
  6. Step 6: Final answer
    x = 21,666.87

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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.