Home / 12,802.20-17,666.69-7,136.94

Finding the Fourth Proportional to 12,802.20, 17,666.69 and 7,136.94

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Solution

The fourth proportional to 12,802.20, 17,666.69 and 7,136.94 is: 9,848.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,802.20 : 17,666.69 = 7,136.94 : x
  2. Step 2: Convert to fraction form
    12,802.20/17,666.69 = 7,136.94/x
  3. Step 3: Cross multiply
    12,802.20x = 17,666.69 × 7,136.94
  4. Step 4: Simplify right side
    12,802.20x = 126,086,106.53
  5. Step 5: Solve for x
    x = 126,086,106.53/12,802.20
  6. Step 6: Final answer
    x = 9,848.78

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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.