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Finding the Fourth Proportional to 27,290.70, 37,658.12 and 15,353.78

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Solution

The fourth proportional to 27,290.70, 37,658.12 and 15,353.78 is: 21,186.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,290.70 : 37,658.12 = 15,353.78 : x
  2. Step 2: Convert to fraction form
    27,290.70/37,658.12 = 15,353.78/x
  3. Step 3: Cross multiply
    27,290.70x = 37,658.12 × 15,353.78
  4. Step 4: Simplify right side
    27,290.70x = 578,194,330.55
  5. Step 5: Solve for x
    x = 578,194,330.55/27,290.70
  6. Step 6: Final answer
    x = 21,186.50

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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.