Home / 18,936.04-28,405.38-5,787.40

Finding the Fourth Proportional to 18,936.04, 28,405.38 and 5,787.40

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Solution

The fourth proportional to 18,936.04, 28,405.38 and 5,787.40 is: 8,681.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.04 : 28,405.38 = 5,787.40 : x
  2. Step 2: Convert to fraction form
    18,936.04/28,405.38 = 5,787.40/x
  3. Step 3: Cross multiply
    18,936.04x = 28,405.38 × 5,787.40
  4. Step 4: Simplify right side
    18,936.04x = 164,393,296.21
  5. Step 5: Solve for x
    x = 164,393,296.21/18,936.04
  6. Step 6: Final answer
    x = 8,681.50

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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.