Home / 15,005.15-20,707.32-8,290.93

Finding the Fourth Proportional to 15,005.15, 20,707.32 and 8,290.93

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Solution

The fourth proportional to 15,005.15, 20,707.32 and 8,290.93 is: 11,441.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,005.15 : 20,707.32 = 8,290.93 : x
  2. Step 2: Convert to fraction form
    15,005.15/20,707.32 = 8,290.93/x
  3. Step 3: Cross multiply
    15,005.15x = 20,707.32 × 8,290.93
  4. Step 4: Simplify right side
    15,005.15x = 171,682,837.07
  5. Step 5: Solve for x
    x = 171,682,837.07/15,005.15
  6. Step 6: Final answer
    x = 11,441.59

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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.