Home / 13,339.69-18,417.33-8,561.68

Finding the Fourth Proportional to 13,339.69, 18,417.33 and 8,561.68

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Solution

The fourth proportional to 13,339.69, 18,417.33 and 8,561.68 is: 11,820.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.69 : 18,417.33 = 8,561.68 : x
  2. Step 2: Convert to fraction form
    13,339.69/18,417.33 = 8,561.68/x
  3. Step 3: Cross multiply
    13,339.69x = 18,417.33 × 8,561.68
  4. Step 4: Simplify right side
    13,339.69x = 157,683,239.87
  5. Step 5: Solve for x
    x = 157,683,239.87/13,339.69
  6. Step 6: Final answer
    x = 11,820.61

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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.