Home / 18,313.31-27,420.75-15,065.61

Finding the Fourth Proportional to 18,313.31, 27,420.75 and 15,065.61

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Solution

The fourth proportional to 18,313.31, 27,420.75 and 15,065.61 is: 22,557.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.31 : 27,420.75 = 15,065.61 : x
  2. Step 2: Convert to fraction form
    18,313.31/27,420.75 = 15,065.61/x
  3. Step 3: Cross multiply
    18,313.31x = 27,420.75 × 15,065.61
  4. Step 4: Simplify right side
    18,313.31x = 413,110,325.41
  5. Step 5: Solve for x
    x = 413,110,325.41/18,313.31
  6. Step 6: Final answer
    x = 22,557.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.