Home / 30,406.57-41,966.52-18,142.76

Finding the Fourth Proportional to 30,406.57, 41,966.52 and 18,142.76

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Solution

The fourth proportional to 30,406.57, 41,966.52 and 18,142.76 is: 25,040.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,406.57 : 41,966.52 = 18,142.76 : x
  2. Step 2: Convert to fraction form
    30,406.57/41,966.52 = 18,142.76/x
  3. Step 3: Cross multiply
    30,406.57x = 41,966.52 × 18,142.76
  4. Step 4: Simplify right side
    30,406.57x = 761,388,500.40
  5. Step 5: Solve for x
    x = 761,388,500.40/30,406.57
  6. Step 6: Final answer
    x = 25,040.26

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Double scale
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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.