Home / 15,116.72-20,862.60-8,829.68

Finding the Fourth Proportional to 15,116.72, 20,862.60 and 8,829.68

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Solution

The fourth proportional to 15,116.72, 20,862.60 and 8,829.68 is: 12,185.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.72 : 20,862.60 = 8,829.68 : x
  2. Step 2: Convert to fraction form
    15,116.72/20,862.60 = 8,829.68/x
  3. Step 3: Cross multiply
    15,116.72x = 20,862.60 × 8,829.68
  4. Step 4: Simplify right side
    15,116.72x = 184,210,081.97
  5. Step 5: Solve for x
    x = 184,210,081.97/15,116.72
  6. Step 6: Final answer
    x = 12,185.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.