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Finding the Fourth Proportional to 21,332.95, 32,003.21 and 7,289.70

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Solution

The fourth proportional to 21,332.95, 32,003.21 and 7,289.70 is: 10,935.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.95 : 32,003.21 = 7,289.70 : x
  2. Step 2: Convert to fraction form
    21,332.95/32,003.21 = 7,289.70/x
  3. Step 3: Cross multiply
    21,332.95x = 32,003.21 × 7,289.70
  4. Step 4: Simplify right side
    21,332.95x = 233,293,799.94
  5. Step 5: Solve for x
    x = 233,293,799.94/21,332.95
  6. Step 6: Final answer
    x = 10,935.84

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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.