Home / 30,151.04-45,212.17-13,511.21

Finding the Fourth Proportional to 30,151.04, 45,212.17 and 13,511.21

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Solution

The fourth proportional to 30,151.04, 45,212.17 and 13,511.21 is: 20,260.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.04 : 45,212.17 = 13,511.21 : x
  2. Step 2: Convert to fraction form
    30,151.04/45,212.17 = 13,511.21/x
  3. Step 3: Cross multiply
    30,151.04x = 45,212.17 × 13,511.21
  4. Step 4: Simplify right side
    30,151.04x = 610,871,123.43
  5. Step 5: Solve for x
    x = 610,871,123.43/30,151.04
  6. Step 6: Final answer
    x = 20,260.37

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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.