Home / 20,943.02-28,898.91-11,990.00

Finding the Fourth Proportional to 20,943.02, 28,898.91 and 11,990.00

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Solution

The fourth proportional to 20,943.02, 28,898.91 and 11,990.00 is: 16,544.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.02 : 28,898.91 = 11,990.00 : x
  2. Step 2: Convert to fraction form
    20,943.02/28,898.91 = 11,990.00/x
  3. Step 3: Cross multiply
    20,943.02x = 28,898.91 × 11,990.00
  4. Step 4: Simplify right side
    20,943.02x = 346,497,786.41
  5. Step 5: Solve for x
    x = 346,497,786.41/20,943.02
  6. Step 6: Final answer
    x = 16,544.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.