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Finding the Fourth Proportional to 15,071.16, 20,798.16 and 8,356.84

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Solution

The fourth proportional to 15,071.16, 20,798.16 and 8,356.84 is: 11,532.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.16 : 20,798.16 = 8,356.84 : x
  2. Step 2: Convert to fraction form
    15,071.16/20,798.16 = 8,356.84/x
  3. Step 3: Cross multiply
    15,071.16x = 20,798.16 × 8,356.84
  4. Step 4: Simplify right side
    15,071.16x = 173,806,895.41
  5. Step 5: Solve for x
    x = 173,806,895.41/15,071.16
  6. Step 6: Final answer
    x = 11,532.42

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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.