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Finding the Fourth Proportional to 17,987.84, 26,985.36 and 6,894.08

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Solution

The fourth proportional to 17,987.84, 26,985.36 and 6,894.08 is: 10,342.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,987.84 : 26,985.36 = 6,894.08 : x
  2. Step 2: Convert to fraction form
    17,987.84/26,985.36 = 6,894.08/x
  3. Step 3: Cross multiply
    17,987.84x = 26,985.36 × 6,894.08
  4. Step 4: Simplify right side
    17,987.84x = 186,039,230.67
  5. Step 5: Solve for x
    x = 186,039,230.67/17,987.84
  6. Step 6: Final answer
    x = 10,342.50

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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.