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Finding the Fourth Proportional to 25,697.52, 35,482.68 and 19,719.72

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Solution

The fourth proportional to 25,697.52, 35,482.68 and 19,719.72 is: 27,228.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,697.52 : 35,482.68 = 19,719.72 : x
  2. Step 2: Convert to fraction form
    25,697.52/35,482.68 = 19,719.72/x
  3. Step 3: Cross multiply
    25,697.52x = 35,482.68 × 19,719.72
  4. Step 4: Simplify right side
    25,697.52x = 699,708,514.45
  5. Step 5: Solve for x
    x = 699,708,514.45/25,697.52
  6. Step 6: Final answer
    x = 27,228.64

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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.