Home / 25,515.24-38,276.06-7,981.80

Finding the Fourth Proportional to 25,515.24, 38,276.06 and 7,981.80

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Solution

The fourth proportional to 25,515.24, 38,276.06 and 7,981.80 is: 11,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,515.24 : 38,276.06 = 7,981.80 : x
  2. Step 2: Convert to fraction form
    25,515.24/38,276.06 = 7,981.80/x
  3. Step 3: Cross multiply
    25,515.24x = 38,276.06 × 7,981.80
  4. Step 4: Simplify right side
    25,515.24x = 305,511,855.71
  5. Step 5: Solve for x
    x = 305,511,855.71/25,515.24
  6. Step 6: Final answer
    x = 11,973.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.