Home / 21,329.56-31,994.36-5,747.20

Finding the Fourth Proportional to 21,329.56, 31,994.36 and 5,747.20

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Solution

The fourth proportional to 21,329.56, 31,994.36 and 5,747.20 is: 8,620.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.56 : 31,994.36 = 5,747.20 : x
  2. Step 2: Convert to fraction form
    21,329.56/31,994.36 = 5,747.20/x
  3. Step 3: Cross multiply
    21,329.56x = 31,994.36 × 5,747.20
  4. Step 4: Simplify right side
    21,329.56x = 183,877,985.79
  5. Step 5: Solve for x
    x = 183,877,985.79/21,329.56
  6. Step 6: Final answer
    x = 8,620.81

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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.