Home / 18,681.49-28,023.83-5,354.53

Finding the Fourth Proportional to 18,681.49, 28,023.83 and 5,354.53

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Solution

The fourth proportional to 18,681.49, 28,023.83 and 5,354.53 is: 8,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.49 : 28,023.83 = 5,354.53 : x
  2. Step 2: Convert to fraction form
    18,681.49/28,023.83 = 5,354.53/x
  3. Step 3: Cross multiply
    18,681.49x = 28,023.83 × 5,354.53
  4. Step 4: Simplify right side
    18,681.49x = 150,054,391.82
  5. Step 5: Solve for x
    x = 150,054,391.82/18,681.49
  6. Step 6: Final answer
    x = 8,032.25

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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.