Home / 30,399.90-45,538.70-15,156.47

Finding the Fourth Proportional to 30,399.90, 45,538.70 and 15,156.47

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Solution

The fourth proportional to 30,399.90, 45,538.70 and 15,156.47 is: 22,704.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,399.90 : 45,538.70 = 15,156.47 : x
  2. Step 2: Convert to fraction form
    30,399.90/45,538.70 = 15,156.47/x
  3. Step 3: Cross multiply
    30,399.90x = 45,538.70 × 15,156.47
  4. Step 4: Simplify right side
    30,399.90x = 690,205,940.39
  5. Step 5: Solve for x
    x = 690,205,940.39/30,399.90
  6. Step 6: Final answer
    x = 22,704.22

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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.