Home / 15,018.31-20,724.39-8,303.51

Finding the Fourth Proportional to 15,018.31, 20,724.39 and 8,303.51

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Solution

The fourth proportional to 15,018.31, 20,724.39 and 8,303.51 is: 11,458.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.31 : 20,724.39 = 8,303.51 : x
  2. Step 2: Convert to fraction form
    15,018.31/20,724.39 = 8,303.51/x
  3. Step 3: Cross multiply
    15,018.31x = 20,724.39 × 8,303.51
  4. Step 4: Simplify right side
    15,018.31x = 172,085,231.42
  5. Step 5: Solve for x
    x = 172,085,231.42/15,018.31
  6. Step 6: Final answer
    x = 11,458.36

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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.