Home / 13,005.48-17,942.70-8,531.71

Finding the Fourth Proportional to 13,005.48, 17,942.70 and 8,531.71

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Solution

The fourth proportional to 13,005.48, 17,942.70 and 8,531.71 is: 11,770.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005.48 : 17,942.70 = 8,531.71 : x
  2. Step 2: Convert to fraction form
    13,005.48/17,942.70 = 8,531.71/x
  3. Step 3: Cross multiply
    13,005.48x = 17,942.70 × 8,531.71
  4. Step 4: Simplify right side
    13,005.48x = 153,081,913.02
  5. Step 5: Solve for x
    x = 153,081,913.02/13,005.48
  6. Step 6: Final answer
    x = 11,770.57

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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.