Home / 15,497.79-21,418.46-11,719.68

Finding the Fourth Proportional to 15,497.79, 21,418.46 and 11,719.68

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Solution

The fourth proportional to 15,497.79, 21,418.46 and 11,719.68 is: 16,196.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,497.79 : 21,418.46 = 11,719.68 : x
  2. Step 2: Convert to fraction form
    15,497.79/21,418.46 = 11,719.68/x
  3. Step 3: Cross multiply
    15,497.79x = 21,418.46 × 11,719.68
  4. Step 4: Simplify right side
    15,497.79x = 251,017,497.29
  5. Step 5: Solve for x
    x = 251,017,497.29/15,497.79
  6. Step 6: Final answer
    x = 16,196.99

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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.