Home / 13,289.66-18,324.51-9,926.81

Finding the Fourth Proportional to 13,289.66, 18,324.51 and 9,926.81

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Solution

The fourth proportional to 13,289.66, 18,324.51 and 9,926.81 is: 13,687.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.66 : 18,324.51 = 9,926.81 : x
  2. Step 2: Convert to fraction form
    13,289.66/18,324.51 = 9,926.81/x
  3. Step 3: Cross multiply
    13,289.66x = 18,324.51 × 9,926.81
  4. Step 4: Simplify right side
    13,289.66x = 181,903,837.49
  5. Step 5: Solve for x
    x = 181,903,837.49/13,289.66
  6. Step 6: Final answer
    x = 13,687.63

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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.