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Finding the Fourth Proportional to 28,988.39, 43,483.71 and 8,999.96

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Solution

The fourth proportional to 28,988.39, 43,483.71 and 8,999.96 is: 13,500.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,988.39 : 43,483.71 = 8,999.96 : x
  2. Step 2: Convert to fraction form
    28,988.39/43,483.71 = 8,999.96/x
  3. Step 3: Cross multiply
    28,988.39x = 43,483.71 × 8,999.96
  4. Step 4: Simplify right side
    28,988.39x = 391,351,433.23
  5. Step 5: Solve for x
    x = 391,351,433.23/28,988.39
  6. Step 6: Final answer
    x = 13,500.28

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Double scale
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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.