Home / 15,852.40-21,876.10-8,682.24

Finding the Fourth Proportional to 15,852.40, 21,876.10 and 8,682.24

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Solution

The fourth proportional to 15,852.40, 21,876.10 and 8,682.24 is: 11,981.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,852.40 : 21,876.10 = 8,682.24 : x
  2. Step 2: Convert to fraction form
    15,852.40/21,876.10 = 8,682.24/x
  3. Step 3: Cross multiply
    15,852.40x = 21,876.10 × 8,682.24
  4. Step 4: Simplify right side
    15,852.40x = 189,933,397.67
  5. Step 5: Solve for x
    x = 189,933,397.67/15,852.40
  6. Step 6: Final answer
    x = 11,981.37

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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.