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Finding the Fourth Proportional to 37,680.50, 52,001.52 and 20,913.50

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Solution

The fourth proportional to 37,680.50, 52,001.52 and 20,913.50 is: 28,861.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,680.50 : 52,001.52 = 20,913.50 : x
  2. Step 2: Convert to fraction form
    37,680.50/52,001.52 = 20,913.50/x
  3. Step 3: Cross multiply
    37,680.50x = 52,001.52 × 20,913.50
  4. Step 4: Simplify right side
    37,680.50x = 1,087,533,788.52
  5. Step 5: Solve for x
    x = 1,087,533,788.52/37,680.50
  6. Step 6: Final answer
    x = 28,861.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.