Home / 30,748.31-42,431.90-17,318.76

Finding the Fourth Proportional to 30,748.31, 42,431.90 and 17,318.76

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Solution

The fourth proportional to 30,748.31, 42,431.90 and 17,318.76 is: 23,899.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,748.31 : 42,431.90 = 17,318.76 : x
  2. Step 2: Convert to fraction form
    30,748.31/42,431.90 = 17,318.76/x
  3. Step 3: Cross multiply
    30,748.31x = 42,431.90 × 17,318.76
  4. Step 4: Simplify right side
    30,748.31x = 734,867,982.83
  5. Step 5: Solve for x
    x = 734,867,982.83/30,748.31
  6. Step 6: Final answer
    x = 23,899.46

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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.