Home / 21,312.44-31,968.54-5,728.76

Finding the Fourth Proportional to 21,312.44, 31,968.54 and 5,728.76

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Solution

The fourth proportional to 21,312.44, 31,968.54 and 5,728.76 is: 8,593.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.44 : 31,968.54 = 5,728.76 : x
  2. Step 2: Convert to fraction form
    21,312.44/31,968.54 = 5,728.76/x
  3. Step 3: Cross multiply
    21,312.44x = 31,968.54 × 5,728.76
  4. Step 4: Simplify right side
    21,312.44x = 183,140,093.21
  5. Step 5: Solve for x
    x = 183,140,093.21/21,312.44
  6. Step 6: Final answer
    x = 8,593.11

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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.