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Finding the Fourth Proportional to 27,140.47, 37,454.90 and 15,203.90

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Solution

The fourth proportional to 27,140.47, 37,454.90 and 15,203.90 is: 20,981.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,140.47 : 37,454.90 = 15,203.90 : x
  2. Step 2: Convert to fraction form
    27,140.47/37,454.90 = 15,203.90/x
  3. Step 3: Cross multiply
    27,140.47x = 37,454.90 × 15,203.90
  4. Step 4: Simplify right side
    27,140.47x = 569,460,554.11
  5. Step 5: Solve for x
    x = 569,460,554.11/27,140.47
  6. Step 6: Final answer
    x = 20,981.97

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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.