Home / 11,508.30-15,901.20-8,878.32

Finding the Fourth Proportional to 11,508.30, 15,901.20 and 8,878.32

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Solution

The fourth proportional to 11,508.30, 15,901.20 and 8,878.32 is: 12,267.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.30 : 15,901.20 = 8,878.32 : x
  2. Step 2: Convert to fraction form
    11,508.30/15,901.20 = 8,878.32/x
  3. Step 3: Cross multiply
    11,508.30x = 15,901.20 × 8,878.32
  4. Step 4: Simplify right side
    11,508.30x = 141,175,941.98
  5. Step 5: Solve for x
    x = 141,175,941.98/11,508.30
  6. Step 6: Final answer
    x = 12,267.32

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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.