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Finding the Fourth Proportional to 18,358, 27,532.88 and 5,210.08

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Solution

The fourth proportional to 18,358, 27,532.88 and 5,210.08 is: 7,813.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358 : 27,532.88 = 5,210.08 : x
  2. Step 2: Convert to fraction form
    18,358/27,532.88 = 5,210.08/x
  3. Step 3: Cross multiply
    18,358x = 27,532.88 × 5,210.08
  4. Step 4: Simplify right side
    18,358x = 143,448,507.43
  5. Step 5: Solve for x
    x = 143,448,507.43/18,358
  6. Step 6: Final answer
    x = 7,813.95

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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.