Home / 14,010.80-21,016.20-7,440.08

Finding the Fourth Proportional to 14,010.80, 21,016.20 and 7,440.08

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Solution

The fourth proportional to 14,010.80, 21,016.20 and 7,440.08 is: 11,160.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,010.80 : 21,016.20 = 7,440.08 : x
  2. Step 2: Convert to fraction form
    14,010.80/21,016.20 = 7,440.08/x
  3. Step 3: Cross multiply
    14,010.80x = 21,016.20 × 7,440.08
  4. Step 4: Simplify right side
    14,010.80x = 156,362,209.30
  5. Step 5: Solve for x
    x = 156,362,209.30/14,010.80
  6. Step 6: Final answer
    x = 11,160.12

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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.