Home / 21,838.47-32,747.37-9,988.77

Finding the Fourth Proportional to 21,838.47, 32,747.37 and 9,988.77

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Solution

The fourth proportional to 21,838.47, 32,747.37 and 9,988.77 is: 14,978.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,838.47 : 32,747.37 = 9,988.77 : x
  2. Step 2: Convert to fraction form
    21,838.47/32,747.37 = 9,988.77/x
  3. Step 3: Cross multiply
    21,838.47x = 32,747.37 × 9,988.77
  4. Step 4: Simplify right side
    21,838.47x = 327,105,947.03
  5. Step 5: Solve for x
    x = 327,105,947.03/21,838.47
  6. Step 6: Final answer
    x = 14,978.43

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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.