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Finding the Fourth Proportional to 25,855.05, 38,782.59 and 7,387.05

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Solution

The fourth proportional to 25,855.05, 38,782.59 and 7,387.05 is: 11,080.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,855.05 : 38,782.59 = 7,387.05 : x
  2. Step 2: Convert to fraction form
    25,855.05/38,782.59 = 7,387.05/x
  3. Step 3: Cross multiply
    25,855.05x = 38,782.59 × 7,387.05
  4. Step 4: Simplify right side
    25,855.05x = 286,488,931.46
  5. Step 5: Solve for x
    x = 286,488,931.46/25,855.05
  6. Step 6: Final answer
    x = 11,080.58

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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.