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Finding the Fourth Proportional to 15,333.62, 21,160.29 and 8,709.62

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Solution

The fourth proportional to 15,333.62, 21,160.29 and 8,709.62 is: 12,019.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,333.62 : 21,160.29 = 8,709.62 : x
  2. Step 2: Convert to fraction form
    15,333.62/21,160.29 = 8,709.62/x
  3. Step 3: Cross multiply
    15,333.62x = 21,160.29 × 8,709.62
  4. Step 4: Simplify right side
    15,333.62x = 184,298,084.99
  5. Step 5: Solve for x
    x = 184,298,084.99/15,333.62
  6. Step 6: Final answer
    x = 12,019.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.