Home / 14,089.80-19,441.40-8,121.72

Finding the Fourth Proportional to 14,089.80, 19,441.40 and 8,121.72

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Solution

The fourth proportional to 14,089.80, 19,441.40 and 8,121.72 is: 11,206.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,089.80 : 19,441.40 = 8,121.72 : x
  2. Step 2: Convert to fraction form
    14,089.80/19,441.40 = 8,121.72/x
  3. Step 3: Cross multiply
    14,089.80x = 19,441.40 × 8,121.72
  4. Step 4: Simplify right side
    14,089.80x = 157,897,607.21
  5. Step 5: Solve for x
    x = 157,897,607.21/14,089.80
  6. Step 6: Final answer
    x = 11,206.52

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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.