Home / 30,213.60-45,274.20-20,316.18

Finding the Fourth Proportional to 30,213.60, 45,274.20 and 20,316.18

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Solution

The fourth proportional to 30,213.60, 45,274.20 and 20,316.18 is: 30,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213.60 : 45,274.20 = 20,316.18 : x
  2. Step 2: Convert to fraction form
    30,213.60/45,274.20 = 20,316.18/x
  3. Step 3: Cross multiply
    30,213.60x = 45,274.20 × 20,316.18
  4. Step 4: Simplify right side
    30,213.60x = 919,798,796.56
  5. Step 5: Solve for x
    x = 919,798,796.56/30,213.60
  6. Step 6: Final answer
    x = 30,443.20

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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.