Home / 15,699.38-21,664.33-8,624.45

Finding the Fourth Proportional to 15,699.38, 21,664.33 and 8,624.45

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Solution

The fourth proportional to 15,699.38, 21,664.33 and 8,624.45 is: 11,901.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.38 : 21,664.33 = 8,624.45 : x
  2. Step 2: Convert to fraction form
    15,699.38/21,664.33 = 8,624.45/x
  3. Step 3: Cross multiply
    15,699.38x = 21,664.33 × 8,624.45
  4. Step 4: Simplify right side
    15,699.38x = 186,842,930.87
  5. Step 5: Solve for x
    x = 186,842,930.87/15,699.38
  6. Step 6: Final answer
    x = 11,901.29

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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.