Home / 30,955.97-42,719.40-16,808.82

Finding the Fourth Proportional to 30,955.97, 42,719.40 and 16,808.82

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Solution

The fourth proportional to 30,955.97, 42,719.40 and 16,808.82 is: 23,196.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,955.97 : 42,719.40 = 16,808.82 : x
  2. Step 2: Convert to fraction form
    30,955.97/42,719.40 = 16,808.82/x
  3. Step 3: Cross multiply
    30,955.97x = 42,719.40 × 16,808.82
  4. Step 4: Simplify right side
    30,955.97x = 718,062,544.91
  5. Step 5: Solve for x
    x = 718,062,544.91/30,955.97
  6. Step 6: Final answer
    x = 23,196.25

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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.