Home / 28,461.46-39,278.97-15,717.07

Finding the Fourth Proportional to 28,461.46, 39,278.97 and 15,717.07

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Solution

The fourth proportional to 28,461.46, 39,278.97 and 15,717.07 is: 21,690.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,461.46 : 39,278.97 = 15,717.07 : x
  2. Step 2: Convert to fraction form
    28,461.46/39,278.97 = 15,717.07/x
  3. Step 3: Cross multiply
    28,461.46x = 39,278.97 × 15,717.07
  4. Step 4: Simplify right side
    28,461.46x = 617,350,321.02
  5. Step 5: Solve for x
    x = 617,350,321.02/28,461.46
  6. Step 6: Final answer
    x = 21,690.75

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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.