Home / 19,530.30-29,295.45-7,851.90

Finding the Fourth Proportional to 19,530.30, 29,295.45 and 7,851.90

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Solution

The fourth proportional to 19,530.30, 29,295.45 and 7,851.90 is: 11,777.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,530.30 : 29,295.45 = 7,851.90 : x
  2. Step 2: Convert to fraction form
    19,530.30/29,295.45 = 7,851.90/x
  3. Step 3: Cross multiply
    19,530.30x = 29,295.45 × 7,851.90
  4. Step 4: Simplify right side
    19,530.30x = 230,024,943.86
  5. Step 5: Solve for x
    x = 230,024,943.86/19,530.30
  6. Step 6: Final answer
    x = 11,777.85

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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.