Home / 25,787.77-38,680.74-9,143.79

Finding the Fourth Proportional to 25,787.77, 38,680.74 and 9,143.79

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Solution

The fourth proportional to 25,787.77, 38,680.74 and 9,143.79 is: 13,715.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.77 : 38,680.74 = 9,143.79 : x
  2. Step 2: Convert to fraction form
    25,787.77/38,680.74 = 9,143.79/x
  3. Step 3: Cross multiply
    25,787.77x = 38,680.74 × 9,143.79
  4. Step 4: Simplify right side
    25,787.77x = 353,688,418.55
  5. Step 5: Solve for x
    x = 353,688,418.55/25,787.77
  6. Step 6: Final answer
    x = 13,715.36

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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.