Home / 15,772.62-21,764.70-8,699.00

Finding the Fourth Proportional to 15,772.62, 21,764.70 and 8,699.00

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Solution

The fourth proportional to 15,772.62, 21,764.70 and 8,699.00 is: 12,003.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.62 : 21,764.70 = 8,699.00 : x
  2. Step 2: Convert to fraction form
    15,772.62/21,764.70 = 8,699.00/x
  3. Step 3: Cross multiply
    15,772.62x = 21,764.70 × 8,699.00
  4. Step 4: Simplify right side
    15,772.62x = 189,331,016.48
  5. Step 5: Solve for x
    x = 189,331,016.48/15,772.62
  6. Step 6: Final answer
    x = 12,003.77

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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.