Home / 30,230.90-45,387.50-20,847.76

Finding the Fourth Proportional to 30,230.90, 45,387.50 and 20,847.76

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Solution

The fourth proportional to 30,230.90, 45,387.50 and 20,847.76 is: 31,300.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,230.90 : 45,387.50 = 20,847.76 : x
  2. Step 2: Convert to fraction form
    30,230.90/45,387.50 = 20,847.76/x
  3. Step 3: Cross multiply
    30,230.90x = 45,387.50 × 20,847.76
  4. Step 4: Simplify right side
    30,230.90x = 946,227,707.00
  5. Step 5: Solve for x
    x = 946,227,707.00/30,230.90
  6. Step 6: Final answer
    x = 31,300.02

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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.