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Finding the Fourth Proportional to 18,830.24, 28,248 and 5,681.12

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Solution

The fourth proportional to 18,830.24, 28,248 and 5,681.12 is: 8,522.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.24 : 28,248 = 5,681.12 : x
  2. Step 2: Convert to fraction form
    18,830.24/28,248 = 5,681.12/x
  3. Step 3: Cross multiply
    18,830.24x = 28,248 × 5,681.12
  4. Step 4: Simplify right side
    18,830.24x = 160,480,277.76
  5. Step 5: Solve for x
    x = 160,480,277.76/18,830.24
  6. Step 6: Final answer
    x = 8,522.48

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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.