Home / 15,819.14-21,829.73-8,648.93

Finding the Fourth Proportional to 15,819.14, 21,829.73 and 8,648.93

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Solution

The fourth proportional to 15,819.14, 21,829.73 and 8,648.93 is: 11,935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.14 : 21,829.73 = 8,648.93 : x
  2. Step 2: Convert to fraction form
    15,819.14/21,829.73 = 8,648.93/x
  3. Step 3: Cross multiply
    15,819.14x = 21,829.73 × 8,648.93
  4. Step 4: Simplify right side
    15,819.14x = 188,803,818.02
  5. Step 5: Solve for x
    x = 188,803,818.02/15,819.14
  6. Step 6: Final answer
    x = 11,935.15

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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.