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Finding the Fourth Proportional to 13,155.84, 19,697.04 and 8,987.04

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Solution

The fourth proportional to 13,155.84, 19,697.04 and 8,987.04 is: 13,455.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.84 : 19,697.04 = 8,987.04 : x
  2. Step 2: Convert to fraction form
    13,155.84/19,697.04 = 8,987.04/x
  3. Step 3: Cross multiply
    13,155.84x = 19,697.04 × 8,987.04
  4. Step 4: Simplify right side
    13,155.84x = 177,018,086.36
  5. Step 5: Solve for x
    x = 177,018,086.36/13,155.84
  6. Step 6: Final answer
    x = 13,455.48

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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.