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Finding the Fourth Proportional to 15,795.66, 21,798.48 and 8,722.56

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Solution

The fourth proportional to 15,795.66, 21,798.48 and 8,722.56 is: 12,037.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,795.66 : 21,798.48 = 8,722.56 : x
  2. Step 2: Convert to fraction form
    15,795.66/21,798.48 = 8,722.56/x
  3. Step 3: Cross multiply
    15,795.66x = 21,798.48 × 8,722.56
  4. Step 4: Simplify right side
    15,795.66x = 190,138,549.71
  5. Step 5: Solve for x
    x = 190,138,549.71/15,795.66
  6. Step 6: Final answer
    x = 12,037.39

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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.