Home / 28,257.21-38,994.89-16,320.24

Finding the Fourth Proportional to 28,257.21, 38,994.89 and 16,320.24

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Solution

The fourth proportional to 28,257.21, 38,994.89 and 16,320.24 is: 22,521.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257.21 : 38,994.89 = 16,320.24 : x
  2. Step 2: Convert to fraction form
    28,257.21/38,994.89 = 16,320.24/x
  3. Step 3: Cross multiply
    28,257.21x = 38,994.89 × 16,320.24
  4. Step 4: Simplify right side
    28,257.21x = 636,405,881.97
  5. Step 5: Solve for x
    x = 636,405,881.97/28,257.21
  6. Step 6: Final answer
    x = 22,521.89

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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.