Home / 30,935.54-42,691.03-16,788.40

Finding the Fourth Proportional to 30,935.54, 42,691.03 and 16,788.40

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Solution

The fourth proportional to 30,935.54, 42,691.03 and 16,788.40 is: 23,167.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.54 : 42,691.03 = 16,788.40 : x
  2. Step 2: Convert to fraction form
    30,935.54/42,691.03 = 16,788.40/x
  3. Step 3: Cross multiply
    30,935.54x = 42,691.03 × 16,788.40
  4. Step 4: Simplify right side
    30,935.54x = 716,713,939.35
  5. Step 5: Solve for x
    x = 716,713,939.35/30,935.54
  6. Step 6: Final answer
    x = 23,167.98

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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.