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Finding the Fourth Proportional to 18,368.60, 27,552.90 and 11,807.60

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Solution

The fourth proportional to 18,368.60, 27,552.90 and 11,807.60 is: 17,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,368.60 : 27,552.90 = 11,807.60 : x
  2. Step 2: Convert to fraction form
    18,368.60/27,552.90 = 11,807.60/x
  3. Step 3: Cross multiply
    18,368.60x = 27,552.90 × 11,807.60
  4. Step 4: Simplify right side
    18,368.60x = 325,333,622.04
  5. Step 5: Solve for x
    x = 325,333,622.04/18,368.60
  6. Step 6: Final answer
    x = 17,711.40

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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.