Home / 30,507.31-42,100.10-17,078.59

Finding the Fourth Proportional to 30,507.31, 42,100.10 and 17,078.59

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Solution

The fourth proportional to 30,507.31, 42,100.10 and 17,078.59 is: 23,568.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,507.31 : 42,100.10 = 17,078.59 : x
  2. Step 2: Convert to fraction form
    30,507.31/42,100.10 = 17,078.59/x
  3. Step 3: Cross multiply
    30,507.31x = 42,100.10 × 17,078.59
  4. Step 4: Simplify right side
    30,507.31x = 719,010,346.86
  5. Step 5: Solve for x
    x = 719,010,346.86/30,507.31
  6. Step 6: Final answer
    x = 23,568.46

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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.