Home / 12,191.04-18,286.40-2,957.12

Finding the Fourth Proportional to 12,191.04, 18,286.40 and 2,957.12

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Solution

The fourth proportional to 12,191.04, 18,286.40 and 2,957.12 is: 4,435.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,191.04 : 18,286.40 = 2,957.12 : x
  2. Step 2: Convert to fraction form
    12,191.04/18,286.40 = 2,957.12/x
  3. Step 3: Cross multiply
    12,191.04x = 18,286.40 × 2,957.12
  4. Step 4: Simplify right side
    12,191.04x = 54,075,079.17
  5. Step 5: Solve for x
    x = 54,075,079.17/12,191.04
  6. Step 6: Final answer
    x = 4,435.64

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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.