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Finding the Fourth Proportional to 21,740.76, 32,608.38 and 6,948.45

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Solution

The fourth proportional to 21,740.76, 32,608.38 and 6,948.45 is: 10,421.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.76 : 32,608.38 = 6,948.45 : x
  2. Step 2: Convert to fraction form
    21,740.76/32,608.38 = 6,948.45/x
  3. Step 3: Cross multiply
    21,740.76x = 32,608.38 × 6,948.45
  4. Step 4: Simplify right side
    21,740.76x = 226,577,698.01
  5. Step 5: Solve for x
    x = 226,577,698.01/21,740.76
  6. Step 6: Final answer
    x = 10,421.79

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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.