Home / 15,701.83-21,669.73-8,989.56

Finding the Fourth Proportional to 15,701.83, 21,669.73 and 8,989.56

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Solution

The fourth proportional to 15,701.83, 21,669.73 and 8,989.56 is: 12,406.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.83 : 21,669.73 = 8,989.56 : x
  2. Step 2: Convert to fraction form
    15,701.83/21,669.73 = 8,989.56/x
  3. Step 3: Cross multiply
    15,701.83x = 21,669.73 × 8,989.56
  4. Step 4: Simplify right side
    15,701.83x = 194,801,338.02
  5. Step 5: Solve for x
    x = 194,801,338.02/15,701.83
  6. Step 6: Final answer
    x = 12,406.28

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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.