Home / 30,130.43-45,164.66-20,272.55

Finding the Fourth Proportional to 30,130.43, 45,164.66 and 20,272.55

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Solution

The fourth proportional to 30,130.43, 45,164.66 and 20,272.55 is: 30,387.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,130.43 : 45,164.66 = 20,272.55 : x
  2. Step 2: Convert to fraction form
    30,130.43/45,164.66 = 20,272.55/x
  3. Step 3: Cross multiply
    30,130.43x = 45,164.66 × 20,272.55
  4. Step 4: Simplify right side
    30,130.43x = 915,602,500.90
  5. Step 5: Solve for x
    x = 915,602,500.90/30,130.43
  6. Step 6: Final answer
    x = 30,387.97

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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.