Home / 18,307.70-25,265.22-10,131.40

Finding the Fourth Proportional to 18,307.70, 25,265.22 and 10,131.40

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Solution

The fourth proportional to 18,307.70, 25,265.22 and 10,131.40 is: 13,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.70 : 25,265.22 = 10,131.40 : x
  2. Step 2: Convert to fraction form
    18,307.70/25,265.22 = 10,131.40/x
  3. Step 3: Cross multiply
    18,307.70x = 25,265.22 × 10,131.40
  4. Step 4: Simplify right side
    18,307.70x = 255,971,923.58
  5. Step 5: Solve for x
    x = 255,971,923.58/18,307.70
  6. Step 6: Final answer
    x = 13,981.65

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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.