Home / 12,089.20-18,133.80-7,955.50

Finding the Fourth Proportional to 12,089.20, 18,133.80 and 7,955.50

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Solution

The fourth proportional to 12,089.20, 18,133.80 and 7,955.50 is: 11,933.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.20 : 18,133.80 = 7,955.50 : x
  2. Step 2: Convert to fraction form
    12,089.20/18,133.80 = 7,955.50/x
  3. Step 3: Cross multiply
    12,089.20x = 18,133.80 × 7,955.50
  4. Step 4: Simplify right side
    12,089.20x = 144,263,445.90
  5. Step 5: Solve for x
    x = 144,263,445.90/12,089.20
  6. Step 6: Final answer
    x = 11,933.25

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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.