Home / 21,780.98-32,691.51-13,477.22

Finding the Fourth Proportional to 21,780.98, 32,691.51 and 13,477.22

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Solution

The fourth proportional to 21,780.98, 32,691.51 and 13,477.22 is: 20,228.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780.98 : 32,691.51 = 13,477.22 : x
  2. Step 2: Convert to fraction form
    21,780.98/32,691.51 = 13,477.22/x
  3. Step 3: Cross multiply
    21,780.98x = 32,691.51 × 13,477.22
  4. Step 4: Simplify right side
    21,780.98x = 440,590,672.40
  5. Step 5: Solve for x
    x = 440,590,672.40/21,780.98
  6. Step 6: Final answer
    x = 20,228.23

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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.