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Finding the Fourth Proportional to 27,881.99, 38,477.17 and 15,135.16

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Solution

The fourth proportional to 27,881.99, 38,477.17 and 15,135.16 is: 20,886.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,881.99 : 38,477.17 = 15,135.16 : x
  2. Step 2: Convert to fraction form
    27,881.99/38,477.17 = 15,135.16/x
  3. Step 3: Cross multiply
    27,881.99x = 38,477.17 × 15,135.16
  4. Step 4: Simplify right side
    27,881.99x = 582,358,048.62
  5. Step 5: Solve for x
    x = 582,358,048.62/27,881.99
  6. Step 6: Final answer
    x = 20,886.53

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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.