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Finding the Fourth Proportional to 38,319.40, 57,444.90 and 14,940.40

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Solution

The fourth proportional to 38,319.40, 57,444.90 and 14,940.40 is: 22,397.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,319.40 : 57,444.90 = 14,940.40 : x
  2. Step 2: Convert to fraction form
    38,319.40/57,444.90 = 14,940.40/x
  3. Step 3: Cross multiply
    38,319.40x = 57,444.90 × 14,940.40
  4. Step 4: Simplify right side
    38,319.40x = 858,249,783.96
  5. Step 5: Solve for x
    x = 858,249,783.96/38,319.40
  6. Step 6: Final answer
    x = 22,397.27

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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.