Home / 18,935.04-28,403.88-5,786.40

Finding the Fourth Proportional to 18,935.04, 28,403.88 and 5,786.40

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Solution

The fourth proportional to 18,935.04, 28,403.88 and 5,786.40 is: 8,680.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.04 : 28,403.88 = 5,786.40 : x
  2. Step 2: Convert to fraction form
    18,935.04/28,403.88 = 5,786.40/x
  3. Step 3: Cross multiply
    18,935.04x = 28,403.88 × 5,786.40
  4. Step 4: Simplify right side
    18,935.04x = 164,356,211.23
  5. Step 5: Solve for x
    x = 164,356,211.23/18,935.04
  6. Step 6: Final answer
    x = 8,680.00

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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.