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Finding the Fourth Proportional to 17,987.68, 26,981.52 and 4,840.08

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Solution

The fourth proportional to 17,987.68, 26,981.52 and 4,840.08 is: 7,260.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,987.68 : 26,981.52 = 4,840.08 : x
  2. Step 2: Convert to fraction form
    17,987.68/26,981.52 = 4,840.08/x
  3. Step 3: Cross multiply
    17,987.68x = 26,981.52 × 4,840.08
  4. Step 4: Simplify right side
    17,987.68x = 130,592,715.32
  5. Step 5: Solve for x
    x = 130,592,715.32/17,987.68
  6. Step 6: Final answer
    x = 7,260.12

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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.