Home / 30,206.28-45,291.50-9,139.92

Finding the Fourth Proportional to 30,206.28, 45,291.50 and 9,139.92

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Solution

The fourth proportional to 30,206.28, 45,291.50 and 9,139.92 is: 13,704.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,206.28 : 45,291.50 = 9,139.92 : x
  2. Step 2: Convert to fraction form
    30,206.28/45,291.50 = 9,139.92/x
  3. Step 3: Cross multiply
    30,206.28x = 45,291.50 × 9,139.92
  4. Step 4: Simplify right side
    30,206.28x = 413,960,686.68
  5. Step 5: Solve for x
    x = 413,960,686.68/30,206.28
  6. Step 6: Final answer
    x = 13,704.46

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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.