Home / 30,935.88-42,691.54-16,788.72

Finding the Fourth Proportional to 30,935.88, 42,691.54 and 16,788.72

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Solution

The fourth proportional to 30,935.88, 42,691.54 and 16,788.72 is: 23,168.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.88 : 42,691.54 = 16,788.72 : x
  2. Step 2: Convert to fraction form
    30,935.88/42,691.54 = 16,788.72/x
  3. Step 3: Cross multiply
    30,935.88x = 42,691.54 × 16,788.72
  4. Step 4: Simplify right side
    30,935.88x = 716,736,269.46
  5. Step 5: Solve for x
    x = 716,736,269.46/30,935.88
  6. Step 6: Final answer
    x = 23,168.45

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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.