Home / 25,351.20-34,979.04-15,916.32

Finding the Fourth Proportional to 25,351.20, 34,979.04 and 15,916.32

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Solution

The fourth proportional to 25,351.20, 34,979.04 and 15,916.32 is: 21,961.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,351.20 : 34,979.04 = 15,916.32 : x
  2. Step 2: Convert to fraction form
    25,351.20/34,979.04 = 15,916.32/x
  3. Step 3: Cross multiply
    25,351.20x = 34,979.04 × 15,916.32
  4. Step 4: Simplify right side
    25,351.20x = 556,737,593.93
  5. Step 5: Solve for x
    x = 556,737,593.93/25,351.20
  6. Step 6: Final answer
    x = 21,961.00

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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.