Home / 15,699.11-21,664.35-8,625.54

Finding the Fourth Proportional to 15,699.11, 21,664.35 and 8,625.54

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Solution

The fourth proportional to 15,699.11, 21,664.35 and 8,625.54 is: 11,903.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.11 : 21,664.35 = 8,625.54 : x
  2. Step 2: Convert to fraction form
    15,699.11/21,664.35 = 8,625.54/x
  3. Step 3: Cross multiply
    15,699.11x = 21,664.35 × 8,625.54
  4. Step 4: Simplify right side
    15,699.11x = 186,866,717.50
  5. Step 5: Solve for x
    x = 186,866,717.50/15,699.11
  6. Step 6: Final answer
    x = 11,903.02

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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.