Home / 25,617.78-35,351.42-18,900.98

Finding the Fourth Proportional to 25,617.78, 35,351.42 and 18,900.98

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Solution

The fourth proportional to 25,617.78, 35,351.42 and 18,900.98 is: 26,082.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,617.78 : 35,351.42 = 18,900.98 : x
  2. Step 2: Convert to fraction form
    25,617.78/35,351.42 = 18,900.98/x
  3. Step 3: Cross multiply
    25,617.78x = 35,351.42 × 18,900.98
  4. Step 4: Simplify right side
    25,617.78x = 668,176,482.39
  5. Step 5: Solve for x
    x = 668,176,482.39/25,617.78
  6. Step 6: Final answer
    x = 26,082.53

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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.