Home / 25,557-38,340.34-8,921.78

Finding the Fourth Proportional to 25,557, 38,340.34 and 8,921.78

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Solution

The fourth proportional to 25,557, 38,340.34 and 8,921.78 is: 13,384.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,557 : 38,340.34 = 8,921.78 : x
  2. Step 2: Convert to fraction form
    25,557/38,340.34 = 8,921.78/x
  3. Step 3: Cross multiply
    25,557x = 38,340.34 × 8,921.78
  4. Step 4: Simplify right side
    25,557x = 342,064,078.61
  5. Step 5: Solve for x
    x = 342,064,078.61/25,557
  6. Step 6: Final answer
    x = 13,384.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.