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Finding the Fourth Proportional to 38,503.01, 57,750.07 and 10,421.40

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Solution

The fourth proportional to 38,503.01, 57,750.07 and 10,421.40 is: 15,630.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,503.01 : 57,750.07 = 10,421.40 : x
  2. Step 2: Convert to fraction form
    38,503.01/57,750.07 = 10,421.40/x
  3. Step 3: Cross multiply
    38,503.01x = 57,750.07 × 10,421.40
  4. Step 4: Simplify right side
    38,503.01x = 601,836,527.39
  5. Step 5: Solve for x
    x = 601,836,527.39/38,503.01
  6. Step 6: Final answer
    x = 15,630.90

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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.