Home / 30,200.10-45,300.15-19,119.30

Finding the Fourth Proportional to 30,200.10, 45,300.15 and 19,119.30

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Solution

The fourth proportional to 30,200.10, 45,300.15 and 19,119.30 is: 28,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,200.10 : 45,300.15 = 19,119.30 : x
  2. Step 2: Convert to fraction form
    30,200.10/45,300.15 = 19,119.30/x
  3. Step 3: Cross multiply
    30,200.10x = 45,300.15 × 19,119.30
  4. Step 4: Simplify right side
    30,200.10x = 866,107,157.90
  5. Step 5: Solve for x
    x = 866,107,157.90/30,200.10
  6. Step 6: Final answer
    x = 28,678.95

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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.