Home / 21,026.90-31,561.11-11,166.15

Finding the Fourth Proportional to 21,026.90, 31,561.11 and 11,166.15

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Solution

The fourth proportional to 21,026.90, 31,561.11 and 11,166.15 is: 16,760.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.90 : 31,561.11 = 11,166.15 : x
  2. Step 2: Convert to fraction form
    21,026.90/31,561.11 = 11,166.15/x
  3. Step 3: Cross multiply
    21,026.90x = 31,561.11 × 11,166.15
  4. Step 4: Simplify right side
    21,026.90x = 352,416,159.67
  5. Step 5: Solve for x
    x = 352,416,159.67/21,026.90
  6. Step 6: Final answer
    x = 16,760.25

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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.