Home / 15,449.51-21,321.56-8,736.55

Finding the Fourth Proportional to 15,449.51, 21,321.56 and 8,736.55

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Solution

The fourth proportional to 15,449.51, 21,321.56 and 8,736.55 is: 12,057.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.51 : 21,321.56 = 8,736.55 : x
  2. Step 2: Convert to fraction form
    15,449.51/21,321.56 = 8,736.55/x
  3. Step 3: Cross multiply
    15,449.51x = 21,321.56 × 8,736.55
  4. Step 4: Simplify right side
    15,449.51x = 186,276,875.02
  5. Step 5: Solve for x
    x = 186,276,875.02/15,449.51
  6. Step 6: Final answer
    x = 12,057.14

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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.