Home / 18,515.36-25,551.28-10,131.84

Finding the Fourth Proportional to 18,515.36, 25,551.28 and 10,131.84

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Solution

The fourth proportional to 18,515.36, 25,551.28 and 10,131.84 is: 13,981.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.36 : 25,551.28 = 10,131.84 : x
  2. Step 2: Convert to fraction form
    18,515.36/25,551.28 = 10,131.84/x
  3. Step 3: Cross multiply
    18,515.36x = 25,551.28 × 10,131.84
  4. Step 4: Simplify right side
    18,515.36x = 258,881,480.76
  5. Step 5: Solve for x
    x = 258,881,480.76/18,515.36
  6. Step 6: Final answer
    x = 13,981.98

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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.