Home / 12,225.12-18,337.44-2,991.12

Finding the Fourth Proportional to 12,225.12, 18,337.44 and 2,991.12

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Solution

The fourth proportional to 12,225.12, 18,337.44 and 2,991.12 is: 4,486.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.12 : 18,337.44 = 2,991.12 : x
  2. Step 2: Convert to fraction form
    12,225.12/18,337.44 = 2,991.12/x
  3. Step 3: Cross multiply
    12,225.12x = 18,337.44 × 2,991.12
  4. Step 4: Simplify right side
    12,225.12x = 54,849,483.53
  5. Step 5: Solve for x
    x = 54,849,483.53/12,225.12
  6. Step 6: Final answer
    x = 4,486.62

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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.