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Finding the Fourth Proportional to 27,021.40, 40,512.90 and 12,237.40

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Solution

The fourth proportional to 27,021.40, 40,512.90 and 12,237.40 is: 18,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,021.40 : 40,512.90 = 12,237.40 : x
  2. Step 2: Convert to fraction form
    27,021.40/40,512.90 = 12,237.40/x
  3. Step 3: Cross multiply
    27,021.40x = 40,512.90 × 12,237.40
  4. Step 4: Simplify right side
    27,021.40x = 495,772,562.46
  5. Step 5: Solve for x
    x = 495,772,562.46/27,021.40
  6. Step 6: Final answer
    x = 18,347.40

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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.