Home / 20,782.02-31,182.75-12,024.30

Finding the Fourth Proportional to 20,782.02, 31,182.75 and 12,024.30

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Solution

The fourth proportional to 20,782.02, 31,182.75 and 12,024.30 is: 18,042.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782.02 : 31,182.75 = 12,024.30 : x
  2. Step 2: Convert to fraction form
    20,782.02/31,182.75 = 12,024.30/x
  3. Step 3: Cross multiply
    20,782.02x = 31,182.75 × 12,024.30
  4. Step 4: Simplify right side
    20,782.02x = 374,950,740.83
  5. Step 5: Solve for x
    x = 374,950,740.83/20,782.02
  6. Step 6: Final answer
    x = 18,042.07

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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.