Home / 15,696.06-21,664.30-8,985.56

Finding the Fourth Proportional to 15,696.06, 21,664.30 and 8,985.56

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Solution

The fourth proportional to 15,696.06, 21,664.30 and 8,985.56 is: 12,402.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.06 : 21,664.30 = 8,985.56 : x
  2. Step 2: Convert to fraction form
    15,696.06/21,664.30 = 8,985.56/x
  3. Step 3: Cross multiply
    15,696.06x = 21,664.30 × 8,985.56
  4. Step 4: Simplify right side
    15,696.06x = 194,665,899.20
  5. Step 5: Solve for x
    x = 194,665,899.20/15,696.06
  6. Step 6: Final answer
    x = 12,402.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.