Home / 25,690.20-35,447.04-15,623.88

Finding the Fourth Proportional to 25,690.20, 35,447.04 and 15,623.88

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Solution

The fourth proportional to 25,690.20, 35,447.04 and 15,623.88 is: 21,557.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,690.20 : 35,447.04 = 15,623.88 : x
  2. Step 2: Convert to fraction form
    25,690.20/35,447.04 = 15,623.88/x
  3. Step 3: Cross multiply
    25,690.20x = 35,447.04 × 15,623.88
  4. Step 4: Simplify right side
    25,690.20x = 553,820,299.32
  5. Step 5: Solve for x
    x = 553,820,299.32/25,690.20
  6. Step 6: Final answer
    x = 21,557.65

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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.