Home / 21,426.70-32,143.95-7,388.74

Finding the Fourth Proportional to 21,426.70, 32,143.95 and 7,388.74

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Solution

The fourth proportional to 21,426.70, 32,143.95 and 7,388.74 is: 11,084.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.70 : 32,143.95 = 7,388.74 : x
  2. Step 2: Convert to fraction form
    21,426.70/32,143.95 = 7,388.74/x
  3. Step 3: Cross multiply
    21,426.70x = 32,143.95 × 7,388.74
  4. Step 4: Simplify right side
    21,426.70x = 237,503,289.12
  5. Step 5: Solve for x
    x = 237,503,289.12/21,426.70
  6. Step 6: Final answer
    x = 11,084.45

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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.