Home / 30,985.35-42,757.36-17,558.72

Finding the Fourth Proportional to 30,985.35, 42,757.36 and 17,558.72

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Solution

The fourth proportional to 30,985.35, 42,757.36 and 17,558.72 is: 24,229.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.35 : 42,757.36 = 17,558.72 : x
  2. Step 2: Convert to fraction form
    30,985.35/42,757.36 = 17,558.72/x
  3. Step 3: Cross multiply
    30,985.35x = 42,757.36 × 17,558.72
  4. Step 4: Simplify right side
    30,985.35x = 750,764,298.39
  5. Step 5: Solve for x
    x = 750,764,298.39/30,985.35
  6. Step 6: Final answer
    x = 24,229.65

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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.