Home / 21,180.69-31,751.60-9,487.53

Finding the Fourth Proportional to 21,180.69, 31,751.60 and 9,487.53

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Solution

The fourth proportional to 21,180.69, 31,751.60 and 9,487.53 is: 14,222.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.69 : 31,751.60 = 9,487.53 : x
  2. Step 2: Convert to fraction form
    21,180.69/31,751.60 = 9,487.53/x
  3. Step 3: Cross multiply
    21,180.69x = 31,751.60 × 9,487.53
  4. Step 4: Simplify right side
    21,180.69x = 301,244,210.11
  5. Step 5: Solve for x
    x = 301,244,210.11/21,180.69
  6. Step 6: Final answer
    x = 14,222.59

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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.