Home / 15,381.42-21,224.58-9,416.58

Finding the Fourth Proportional to 15,381.42, 21,224.58 and 9,416.58

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Solution

The fourth proportional to 15,381.42, 21,224.58 and 9,416.58 is: 12,993.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.42 : 21,224.58 = 9,416.58 : x
  2. Step 2: Convert to fraction form
    15,381.42/21,224.58 = 9,416.58/x
  3. Step 3: Cross multiply
    15,381.42x = 21,224.58 × 9,416.58
  4. Step 4: Simplify right side
    15,381.42x = 199,862,955.54
  5. Step 5: Solve for x
    x = 199,862,955.54/15,381.42
  6. Step 6: Final answer
    x = 12,993.79

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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.