Home / 10,987.70-16,492.35-5,447.30

Finding the Fourth Proportional to 10,987.70, 16,492.35 and 5,447.30

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Solution

The fourth proportional to 10,987.70, 16,492.35 and 5,447.30 is: 8,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.70 : 16,492.35 = 5,447.30 : x
  2. Step 2: Convert to fraction form
    10,987.70/16,492.35 = 5,447.30/x
  3. Step 3: Cross multiply
    10,987.70x = 16,492.35 × 5,447.30
  4. Step 4: Simplify right side
    10,987.70x = 89,838,778.16
  5. Step 5: Solve for x
    x = 89,838,778.16/10,987.70
  6. Step 6: Final answer
    x = 8,176.30

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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.