Home / 21,315.96-31,969.08-5,734.80

Finding the Fourth Proportional to 21,315.96, 31,969.08 and 5,734.80

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Solution

The fourth proportional to 21,315.96, 31,969.08 and 5,734.80 is: 8,600.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.96 : 31,969.08 = 5,734.80 : x
  2. Step 2: Convert to fraction form
    21,315.96/31,969.08 = 5,734.80/x
  3. Step 3: Cross multiply
    21,315.96x = 31,969.08 × 5,734.80
  4. Step 4: Simplify right side
    21,315.96x = 183,336,279.98
  5. Step 5: Solve for x
    x = 183,336,279.98/21,315.96
  6. Step 6: Final answer
    x = 8,600.89

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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.