Home / 21,659.77-29,888.31-12,098.89

Finding the Fourth Proportional to 21,659.77, 29,888.31 and 12,098.89

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Solution

The fourth proportional to 21,659.77, 29,888.31 and 12,098.89 is: 16,695.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,659.77 : 29,888.31 = 12,098.89 : x
  2. Step 2: Convert to fraction form
    21,659.77/29,888.31 = 12,098.89/x
  3. Step 3: Cross multiply
    21,659.77x = 29,888.31 × 12,098.89
  4. Step 4: Simplify right side
    21,659.77x = 361,615,374.98
  5. Step 5: Solve for x
    x = 361,615,374.98/21,659.77
  6. Step 6: Final answer
    x = 16,695.25

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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.