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Finding the Fourth Proportional to 25,855.78, 35,680.02 and 15,801.04

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Solution

The fourth proportional to 25,855.78, 35,680.02 and 15,801.04 is: 21,804.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,855.78 : 35,680.02 = 15,801.04 : x
  2. Step 2: Convert to fraction form
    25,855.78/35,680.02 = 15,801.04/x
  3. Step 3: Cross multiply
    25,855.78x = 35,680.02 × 15,801.04
  4. Step 4: Simplify right side
    25,855.78x = 563,781,423.22
  5. Step 5: Solve for x
    x = 563,781,423.22/25,855.78
  6. Step 6: Final answer
    x = 21,804.85

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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.