Home / 18,988.61-28,500.78-9,635.34

Finding the Fourth Proportional to 18,988.61, 28,500.78 and 9,635.34

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Solution

The fourth proportional to 18,988.61, 28,500.78 and 9,635.34 is: 14,462.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.61 : 28,500.78 = 9,635.34 : x
  2. Step 2: Convert to fraction form
    18,988.61/28,500.78 = 9,635.34/x
  3. Step 3: Cross multiply
    18,988.61x = 28,500.78 × 9,635.34
  4. Step 4: Simplify right side
    18,988.61x = 274,614,563.06
  5. Step 5: Solve for x
    x = 274,614,563.06/18,988.61
  6. Step 6: Final answer
    x = 14,462.07

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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.