Home / 30,739.81-42,420.51-17,311.22

Finding the Fourth Proportional to 30,739.81, 42,420.51 and 17,311.22

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Solution

The fourth proportional to 30,739.81, 42,420.51 and 17,311.22 is: 23,889.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,739.81 : 42,420.51 = 17,311.22 : x
  2. Step 2: Convert to fraction form
    30,739.81/42,420.51 = 17,311.22/x
  3. Step 3: Cross multiply
    30,739.81x = 42,420.51 × 17,311.22
  4. Step 4: Simplify right side
    30,739.81x = 734,350,781.12
  5. Step 5: Solve for x
    x = 734,350,781.12/30,739.81
  6. Step 6: Final answer
    x = 23,889.24

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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.