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Finding the Fourth Proportional to 19,329.60, 28,983.60 and 8,928.48

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Solution

The fourth proportional to 19,329.60, 28,983.60 and 8,928.48 is: 13,387.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.60 : 28,983.60 = 8,928.48 : x
  2. Step 2: Convert to fraction form
    19,329.60/28,983.60 = 8,928.48/x
  3. Step 3: Cross multiply
    19,329.60x = 28,983.60 × 8,928.48
  4. Step 4: Simplify right side
    19,329.60x = 258,779,492.93
  5. Step 5: Solve for x
    x = 258,779,492.93/19,329.60
  6. Step 6: Final answer
    x = 13,387.73

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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.