Home / 21,389.28-32,083.84-5,806.88

Finding the Fourth Proportional to 21,389.28, 32,083.84 and 5,806.88

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Solution

The fourth proportional to 21,389.28, 32,083.84 and 5,806.88 is: 8,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.28 : 32,083.84 = 5,806.88 : x
  2. Step 2: Convert to fraction form
    21,389.28/32,083.84 = 5,806.88/x
  3. Step 3: Cross multiply
    21,389.28x = 32,083.84 × 5,806.88
  4. Step 4: Simplify right side
    21,389.28x = 186,307,008.82
  5. Step 5: Solve for x
    x = 186,307,008.82/21,389.28
  6. Step 6: Final answer
    x = 8,710.30

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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.