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Finding the Fourth Proportional to 27,132.60, 40,698.90 and 19,259.40

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Solution

The fourth proportional to 27,132.60, 40,698.90 and 19,259.40 is: 28,889.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,132.60 : 40,698.90 = 19,259.40 : x
  2. Step 2: Convert to fraction form
    27,132.60/40,698.90 = 19,259.40/x
  3. Step 3: Cross multiply
    27,132.60x = 40,698.90 × 19,259.40
  4. Step 4: Simplify right side
    27,132.60x = 783,836,394.66
  5. Step 5: Solve for x
    x = 783,836,394.66/27,132.60
  6. Step 6: Final answer
    x = 28,889.10

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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.