Home / 28,463.05-39,278.55-15,717.54

Finding the Fourth Proportional to 28,463.05, 39,278.55 and 15,717.54

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Solution

The fourth proportional to 28,463.05, 39,278.55 and 15,717.54 is: 21,689.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,463.05 : 39,278.55 = 15,717.54 : x
  2. Step 2: Convert to fraction form
    28,463.05/39,278.55 = 15,717.54/x
  3. Step 3: Cross multiply
    28,463.05x = 39,278.55 × 15,717.54
  4. Step 4: Simplify right side
    28,463.05x = 617,362,180.77
  5. Step 5: Solve for x
    x = 617,362,180.77/28,463.05
  6. Step 6: Final answer
    x = 21,689.95

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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.