Home / 15,558.14-21,470.66-9,509.36

Finding the Fourth Proportional to 15,558.14, 21,470.66 and 9,509.36

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Solution

The fourth proportional to 15,558.14, 21,470.66 and 9,509.36 is: 13,123.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.14 : 21,470.66 = 9,509.36 : x
  2. Step 2: Convert to fraction form
    15,558.14/21,470.66 = 9,509.36/x
  3. Step 3: Cross multiply
    15,558.14x = 21,470.66 × 9,509.36
  4. Step 4: Simplify right side
    15,558.14x = 204,172,235.38
  5. Step 5: Solve for x
    x = 204,172,235.38/15,558.14
  6. Step 6: Final answer
    x = 13,123.18

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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.