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Finding the Fourth Proportional to 25,255.40, 37,887.36 and 7,721.12

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Solution

The fourth proportional to 25,255.40, 37,887.36 and 7,721.12 is: 11,582.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,255.40 : 37,887.36 = 7,721.12 : x
  2. Step 2: Convert to fraction form
    25,255.40/37,887.36 = 7,721.12/x
  3. Step 3: Cross multiply
    25,255.40x = 37,887.36 × 7,721.12
  4. Step 4: Simplify right side
    25,255.40x = 292,532,853.04
  5. Step 5: Solve for x
    x = 292,532,853.04/25,255.40
  6. Step 6: Final answer
    x = 11,582.98

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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.