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Finding the Fourth Proportional to 27,140.52, 40,697.40 and 12,905.04

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Solution

The fourth proportional to 27,140.52, 40,697.40 and 12,905.04 is: 19,351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,140.52 : 40,697.40 = 12,905.04 : x
  2. Step 2: Convert to fraction form
    27,140.52/40,697.40 = 12,905.04/x
  3. Step 3: Cross multiply
    27,140.52x = 40,697.40 × 12,905.04
  4. Step 4: Simplify right side
    27,140.52x = 525,201,574.90
  5. Step 5: Solve for x
    x = 525,201,574.90/27,140.52
  6. Step 6: Final answer
    x = 19,351.20

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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.