Home / 13,979.80-19,290.96-8,012.02

Finding the Fourth Proportional to 13,979.80, 19,290.96 and 8,012.02

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Solution

The fourth proportional to 13,979.80, 19,290.96 and 8,012.02 is: 11,055.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.80 : 19,290.96 = 8,012.02 : x
  2. Step 2: Convert to fraction form
    13,979.80/19,290.96 = 8,012.02/x
  3. Step 3: Cross multiply
    13,979.80x = 19,290.96 × 8,012.02
  4. Step 4: Simplify right side
    13,979.80x = 154,559,557.34
  5. Step 5: Solve for x
    x = 154,559,557.34/13,979.80
  6. Step 6: Final answer
    x = 11,055.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.