Home / 21,070.97-31,587.89-8,601.47

Finding the Fourth Proportional to 21,070.97, 31,587.89 and 8,601.47

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Solution

The fourth proportional to 21,070.97, 31,587.89 and 8,601.47 is: 12,894.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.97 : 31,587.89 = 8,601.47 : x
  2. Step 2: Convert to fraction form
    21,070.97/31,587.89 = 8,601.47/x
  3. Step 3: Cross multiply
    21,070.97x = 31,587.89 × 8,601.47
  4. Step 4: Simplify right side
    21,070.97x = 271,702,087.25
  5. Step 5: Solve for x
    x = 271,702,087.25/21,070.97
  6. Step 6: Final answer
    x = 12,894.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.