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Finding the Fourth Proportional to 9,148.04, 12,615.04 and 8,136.55

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Solution

The fourth proportional to 9,148.04, 12,615.04 and 8,136.55 is: 11,220.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,148.04 : 12,615.04 = 8,136.55 : x
  2. Step 2: Convert to fraction form
    9,148.04/12,615.04 = 8,136.55/x
  3. Step 3: Cross multiply
    9,148.04x = 12,615.04 × 8,136.55
  4. Step 4: Simplify right side
    9,148.04x = 102,642,929.65
  5. Step 5: Solve for x
    x = 102,642,929.65/9,148.04
  6. Step 6: Final answer
    x = 11,220.21

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Half scale
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Double scale
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Similar ratio
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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.