Home / 25,855.13-35,679.15-15,800.42

Finding the Fourth Proportional to 25,855.13, 35,679.15 and 15,800.42

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Solution

The fourth proportional to 25,855.13, 35,679.15 and 15,800.42 is: 21,804.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,855.13 : 35,679.15 = 15,800.42 : x
  2. Step 2: Convert to fraction form
    25,855.13/35,679.15 = 15,800.42/x
  3. Step 3: Cross multiply
    25,855.13x = 35,679.15 × 15,800.42
  4. Step 4: Simplify right side
    25,855.13x = 563,745,376.85
  5. Step 5: Solve for x
    x = 563,745,376.85/25,855.13
  6. Step 6: Final answer
    x = 21,804.01

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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.