Home / 13,985.98-20,979.03-5,666.16

Finding the Fourth Proportional to 13,985.98, 20,979.03 and 5,666.16

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Solution

The fourth proportional to 13,985.98, 20,979.03 and 5,666.16 is: 8,499.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.98 : 20,979.03 = 5,666.16 : x
  2. Step 2: Convert to fraction form
    13,985.98/20,979.03 = 5,666.16/x
  3. Step 3: Cross multiply
    13,985.98x = 20,979.03 × 5,666.16
  4. Step 4: Simplify right side
    13,985.98x = 118,870,540.62
  5. Step 5: Solve for x
    x = 118,870,540.62/13,985.98
  6. Step 6: Final answer
    x = 8,499.26

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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.