Home / 27,790.86-38,352.29-15,215.61

Finding the Fourth Proportional to 27,790.86, 38,352.29 and 15,215.61

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Solution

The fourth proportional to 27,790.86, 38,352.29 and 15,215.61 is: 20,998.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,790.86 : 38,352.29 = 15,215.61 : x
  2. Step 2: Convert to fraction form
    27,790.86/38,352.29 = 15,215.61/x
  3. Step 3: Cross multiply
    27,790.86x = 38,352.29 × 15,215.61
  4. Step 4: Simplify right side
    27,790.86x = 583,553,411.17
  5. Step 5: Solve for x
    x = 583,553,411.17/27,790.86
  6. Step 6: Final answer
    x = 20,998.03

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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.