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Finding the Fourth Proportional to 8,987.13, 13,459.91 and 8,675.73

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Solution

The fourth proportional to 8,987.13, 13,459.91 and 8,675.73 is: 12,993.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.13 : 13,459.91 = 8,675.73 : x
  2. Step 2: Convert to fraction form
    8,987.13/13,459.91 = 8,675.73/x
  3. Step 3: Cross multiply
    8,987.13x = 13,459.91 × 8,675.73
  4. Step 4: Simplify right side
    8,987.13x = 116,774,501.61
  5. Step 5: Solve for x
    x = 116,774,501.61/8,987.13
  6. Step 6: Final answer
    x = 12,993.53

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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.