Home / 15,276.06-21,090.78-9,618.48

Finding the Fourth Proportional to 15,276.06, 21,090.78 and 9,618.48

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Solution

The fourth proportional to 15,276.06, 21,090.78 and 9,618.48 is: 13,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,276.06 : 21,090.78 = 9,618.48 : x
  2. Step 2: Convert to fraction form
    15,276.06/21,090.78 = 9,618.48/x
  3. Step 3: Cross multiply
    15,276.06x = 21,090.78 × 9,618.48
  4. Step 4: Simplify right side
    15,276.06x = 202,861,245.61
  5. Step 5: Solve for x
    x = 202,861,245.61/15,276.06
  6. Step 6: Final answer
    x = 13,279.68

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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.