Home / 30,438.96-42,005.64-17,010.21

Finding the Fourth Proportional to 30,438.96, 42,005.64 and 17,010.21

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Solution

The fourth proportional to 30,438.96, 42,005.64 and 17,010.21 is: 23,474.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,438.96 : 42,005.64 = 17,010.21 : x
  2. Step 2: Convert to fraction form
    30,438.96/42,005.64 = 17,010.21/x
  3. Step 3: Cross multiply
    30,438.96x = 42,005.64 × 17,010.21
  4. Step 4: Simplify right side
    30,438.96x = 714,524,587.86
  5. Step 5: Solve for x
    x = 714,524,587.86/30,438.96
  6. Step 6: Final answer
    x = 23,474.02

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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.