Home / 15,018.23-20,724.31-8,303.46

Finding the Fourth Proportional to 15,018.23, 20,724.31 and 8,303.46

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Solution

The fourth proportional to 15,018.23, 20,724.31 and 8,303.46 is: 11,458.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.23 : 20,724.31 = 8,303.46 : x
  2. Step 2: Convert to fraction form
    15,018.23/20,724.31 = 8,303.46/x
  3. Step 3: Cross multiply
    15,018.23x = 20,724.31 × 8,303.46
  4. Step 4: Simplify right side
    15,018.23x = 172,083,458.35
  5. Step 5: Solve for x
    x = 172,083,458.35/15,018.23
  6. Step 6: Final answer
    x = 11,458.31

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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.