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Finding the Fourth Proportional to 21,801.69, 32,707.80 and 7,011.99

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Solution

The fourth proportional to 21,801.69, 32,707.80 and 7,011.99 is: 10,519.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,801.69 : 32,707.80 = 7,011.99 : x
  2. Step 2: Convert to fraction form
    21,801.69/32,707.80 = 7,011.99/x
  3. Step 3: Cross multiply
    21,801.69x = 32,707.80 × 7,011.99
  4. Step 4: Simplify right side
    21,801.69x = 229,346,766.52
  5. Step 5: Solve for x
    x = 229,346,766.52/21,801.69
  6. Step 6: Final answer
    x = 10,519.68

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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.