Home / 18,940.04-28,411.38-5,791.40

Finding the Fourth Proportional to 18,940.04, 28,411.38 and 5,791.40

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Solution

The fourth proportional to 18,940.04, 28,411.38 and 5,791.40 is: 8,687.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.04 : 28,411.38 = 5,791.40 : x
  2. Step 2: Convert to fraction form
    18,940.04/28,411.38 = 5,791.40/x
  3. Step 3: Cross multiply
    18,940.04x = 28,411.38 × 5,791.40
  4. Step 4: Simplify right side
    18,940.04x = 164,541,666.13
  5. Step 5: Solve for x
    x = 164,541,666.13/18,940.04
  6. Step 6: Final answer
    x = 8,687.50

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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.