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Finding the Fourth Proportional to 17,987.60, 26,981.40 and 6,299.30

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Solution

The fourth proportional to 17,987.60, 26,981.40 and 6,299.30 is: 9,448.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,987.60 : 26,981.40 = 6,299.30 : x
  2. Step 2: Convert to fraction form
    17,987.60/26,981.40 = 6,299.30/x
  3. Step 3: Cross multiply
    17,987.60x = 26,981.40 × 6,299.30
  4. Step 4: Simplify right side
    17,987.60x = 169,963,933.02
  5. Step 5: Solve for x
    x = 169,963,933.02/17,987.60
  6. Step 6: Final answer
    x = 9,448.95

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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.