Home / 21,054.58-29,060.20-13,885.79

Finding the Fourth Proportional to 21,054.58, 29,060.20 and 13,885.79

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Solution

The fourth proportional to 21,054.58, 29,060.20 and 13,885.79 is: 19,165.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.58 : 29,060.20 = 13,885.79 : x
  2. Step 2: Convert to fraction form
    21,054.58/29,060.20 = 13,885.79/x
  3. Step 3: Cross multiply
    21,054.58x = 29,060.20 × 13,885.79
  4. Step 4: Simplify right side
    21,054.58x = 403,523,689.26
  5. Step 5: Solve for x
    x = 403,523,689.26/21,054.58
  6. Step 6: Final answer
    x = 19,165.61

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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.