Home / 18,578.40-25,612.88-13,263.98

Finding the Fourth Proportional to 18,578.40, 25,612.88 and 13,263.98

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Solution

The fourth proportional to 18,578.40, 25,612.88 and 13,263.98 is: 18,286.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.40 : 25,612.88 = 13,263.98 : x
  2. Step 2: Convert to fraction form
    18,578.40/25,612.88 = 13,263.98/x
  3. Step 3: Cross multiply
    18,578.40x = 25,612.88 × 13,263.98
  4. Step 4: Simplify right side
    18,578.40x = 339,728,728.06
  5. Step 5: Solve for x
    x = 339,728,728.06/18,578.40
  6. Step 6: Final answer
    x = 18,286.22

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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.