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Finding the Fourth Proportional to 13,779.66, 20,669.03 and 5,988.47

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Solution

The fourth proportional to 13,779.66, 20,669.03 and 5,988.47 is: 8,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.66 : 20,669.03 = 5,988.47 : x
  2. Step 2: Convert to fraction form
    13,779.66/20,669.03 = 5,988.47/x
  3. Step 3: Cross multiply
    13,779.66x = 20,669.03 × 5,988.47
  4. Step 4: Simplify right side
    13,779.66x = 123,775,866.08
  5. Step 5: Solve for x
    x = 123,775,866.08/13,779.66
  6. Step 6: Final answer
    x = 8,982.51

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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.