Home / 30,133.17-45,200.14-20,770.68

Finding the Fourth Proportional to 30,133.17, 45,200.14 and 20,770.68

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Solution

The fourth proportional to 30,133.17, 45,200.14 and 20,770.68 is: 31,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,133.17 : 45,200.14 = 20,770.68 : x
  2. Step 2: Convert to fraction form
    30,133.17/45,200.14 = 20,770.68/x
  3. Step 3: Cross multiply
    30,133.17x = 45,200.14 × 20,770.68
  4. Step 4: Simplify right side
    30,133.17x = 938,837,314.04
  5. Step 5: Solve for x
    x = 938,837,314.04/30,133.17
  6. Step 6: Final answer
    x = 31,156.27

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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.