Home / 30,125.57-45,197.81-18,130.82

Finding the Fourth Proportional to 30,125.57, 45,197.81 and 18,130.82

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Solution

The fourth proportional to 30,125.57, 45,197.81 and 18,130.82 is: 27,201.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,125.57 : 45,197.81 = 18,130.82 : x
  2. Step 2: Convert to fraction form
    30,125.57/45,197.81 = 18,130.82/x
  3. Step 3: Cross multiply
    30,125.57x = 45,197.81 × 18,130.82
  4. Step 4: Simplify right side
    30,125.57x = 819,473,040.86
  5. Step 5: Solve for x
    x = 819,473,040.86/30,125.57
  6. Step 6: Final answer
    x = 27,201.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.