Home / 15,607.36-21,538.83-8,803.66

Finding the Fourth Proportional to 15,607.36, 21,538.83 and 8,803.66

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Solution

The fourth proportional to 15,607.36, 21,538.83 and 8,803.66 is: 12,149.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.36 : 21,538.83 = 8,803.66 : x
  2. Step 2: Convert to fraction form
    15,607.36/21,538.83 = 8,803.66/x
  3. Step 3: Cross multiply
    15,607.36x = 21,538.83 × 8,803.66
  4. Step 4: Simplify right side
    15,607.36x = 189,620,506.15
  5. Step 5: Solve for x
    x = 189,620,506.15/15,607.36
  6. Step 6: Final answer
    x = 12,149.43

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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.