Home / 15,391.48-21,238.70-9,424.84

Finding the Fourth Proportional to 15,391.48, 21,238.70 and 9,424.84

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Solution

The fourth proportional to 15,391.48, 21,238.70 and 9,424.84 is: 13,005.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.48 : 21,238.70 = 9,424.84 : x
  2. Step 2: Convert to fraction form
    15,391.48/21,238.70 = 9,424.84/x
  3. Step 3: Cross multiply
    15,391.48x = 21,238.70 × 9,424.84
  4. Step 4: Simplify right side
    15,391.48x = 200,171,349.31
  5. Step 5: Solve for x
    x = 200,171,349.31/15,391.48
  6. Step 6: Final answer
    x = 13,005.33

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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.