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Finding the Fourth Proportional to 27,000.40, 40,465.90 and 12,939.32

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Solution

The fourth proportional to 27,000.40, 40,465.90 and 12,939.32 is: 19,392.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,000.40 : 40,465.90 = 12,939.32 : x
  2. Step 2: Convert to fraction form
    27,000.40/40,465.90 = 12,939.32/x
  3. Step 3: Cross multiply
    27,000.40x = 40,465.90 × 12,939.32
  4. Step 4: Simplify right side
    27,000.40x = 523,601,229.19
  5. Step 5: Solve for x
    x = 523,601,229.19/27,000.40
  6. Step 6: Final answer
    x = 19,392.35

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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.