Home / 13,368.68-18,449.04-7,400.18

Finding the Fourth Proportional to 13,368.68, 18,449.04 and 7,400.18

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Solution

The fourth proportional to 13,368.68, 18,449.04 and 7,400.18 is: 10,212.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.68 : 18,449.04 = 7,400.18 : x
  2. Step 2: Convert to fraction form
    13,368.68/18,449.04 = 7,400.18/x
  3. Step 3: Cross multiply
    13,368.68x = 18,449.04 × 7,400.18
  4. Step 4: Simplify right side
    13,368.68x = 136,526,216.83
  5. Step 5: Solve for x
    x = 136,526,216.83/13,368.68
  6. Step 6: Final answer
    x = 10,212.39

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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.