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Finding the Fourth Proportional to 27,290.61, 40,931.34 and 7,571.16

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Solution

The fourth proportional to 27,290.61, 40,931.34 and 7,571.16 is: 11,355.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,290.61 : 40,931.34 = 7,571.16 : x
  2. Step 2: Convert to fraction form
    27,290.61/40,931.34 = 7,571.16/x
  3. Step 3: Cross multiply
    27,290.61x = 40,931.34 × 7,571.16
  4. Step 4: Simplify right side
    27,290.61x = 309,897,724.15
  5. Step 5: Solve for x
    x = 309,897,724.15/27,290.61
  6. Step 6: Final answer
    x = 11,355.47

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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.