Home / 15,699.75-21,665.52-8,529.59

Finding the Fourth Proportional to 15,699.75, 21,665.52 and 8,529.59

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Solution

The fourth proportional to 15,699.75, 21,665.52 and 8,529.59 is: 11,770.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.75 : 21,665.52 = 8,529.59 : x
  2. Step 2: Convert to fraction form
    15,699.75/21,665.52 = 8,529.59/x
  3. Step 3: Cross multiply
    15,699.75x = 21,665.52 × 8,529.59
  4. Step 4: Simplify right side
    15,699.75x = 184,797,894.41
  5. Step 5: Solve for x
    x = 184,797,894.41/15,699.75
  6. Step 6: Final answer
    x = 11,770.75

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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.