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Finding the Fourth Proportional to 12,510.69, 17,220.90 and 11,329.71

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Solution

The fourth proportional to 12,510.69, 17,220.90 and 11,329.71 is: 15,595.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.69 : 17,220.90 = 11,329.71 : x
  2. Step 2: Convert to fraction form
    12,510.69/17,220.90 = 11,329.71/x
  3. Step 3: Cross multiply
    12,510.69x = 17,220.90 × 11,329.71
  4. Step 4: Simplify right side
    12,510.69x = 195,107,802.94
  5. Step 5: Solve for x
    x = 195,107,802.94/12,510.69
  6. Step 6: Final answer
    x = 15,595.29

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Double scale
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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.