Home / 30,720.96-42,397.14-17,293.56

Finding the Fourth Proportional to 30,720.96, 42,397.14 and 17,293.56

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Solution

The fourth proportional to 30,720.96, 42,397.14 and 17,293.56 is: 23,866.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,720.96 : 42,397.14 = 17,293.56 : x
  2. Step 2: Convert to fraction form
    30,720.96/42,397.14 = 17,293.56/x
  3. Step 3: Cross multiply
    30,720.96x = 42,397.14 × 17,293.56
  4. Step 4: Simplify right side
    30,720.96x = 733,197,484.42
  5. Step 5: Solve for x
    x = 733,197,484.42/30,720.96
  6. Step 6: Final answer
    x = 23,866.36

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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.