Home / 15,110.36-20,852.28-8,396.61

Finding the Fourth Proportional to 15,110.36, 20,852.28 and 8,396.61

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Solution

The fourth proportional to 15,110.36, 20,852.28 and 8,396.61 is: 11,587.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,110.36 : 20,852.28 = 8,396.61 : x
  2. Step 2: Convert to fraction form
    15,110.36/20,852.28 = 8,396.61/x
  3. Step 3: Cross multiply
    15,110.36x = 20,852.28 × 8,396.61
  4. Step 4: Simplify right side
    15,110.36x = 175,088,462.77
  5. Step 5: Solve for x
    x = 175,088,462.77/15,110.36
  6. Step 6: Final answer
    x = 11,587.31

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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.