Home / 13,369.18-18,449.73-7,400.68

Finding the Fourth Proportional to 13,369.18, 18,449.73 and 7,400.68

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Solution

The fourth proportional to 13,369.18, 18,449.73 and 7,400.68 is: 10,213.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369.18 : 18,449.73 = 7,400.68 : x
  2. Step 2: Convert to fraction form
    13,369.18/18,449.73 = 7,400.68/x
  3. Step 3: Cross multiply
    13,369.18x = 18,449.73 × 7,400.68
  4. Step 4: Simplify right side
    13,369.18x = 136,540,547.82
  5. Step 5: Solve for x
    x = 136,540,547.82/13,369.18
  6. Step 6: Final answer
    x = 10,213.08

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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.