Home / 13,281.89-18,308.97-10,919.93

Finding the Fourth Proportional to 13,281.89, 18,308.97 and 10,919.93

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Solution

The fourth proportional to 13,281.89, 18,308.97 and 10,919.93 is: 15,053.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.89 : 18,308.97 = 10,919.93 : x
  2. Step 2: Convert to fraction form
    13,281.89/18,308.97 = 10,919.93/x
  3. Step 3: Cross multiply
    13,281.89x = 18,308.97 × 10,919.93
  4. Step 4: Simplify right side
    13,281.89x = 199,932,579.23
  5. Step 5: Solve for x
    x = 199,932,579.23/13,281.89
  6. Step 6: Final answer
    x = 15,053.03

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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.