Home / 11,558.08-15,966.48-9,197.20

Finding the Fourth Proportional to 11,558.08, 15,966.48 and 9,197.20

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Solution

The fourth proportional to 11,558.08, 15,966.48 and 9,197.20 is: 12,705.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,558.08 : 15,966.48 = 9,197.20 : x
  2. Step 2: Convert to fraction form
    11,558.08/15,966.48 = 9,197.20/x
  3. Step 3: Cross multiply
    11,558.08x = 15,966.48 × 9,197.20
  4. Step 4: Simplify right side
    11,558.08x = 146,846,909.86
  5. Step 5: Solve for x
    x = 146,846,909.86/11,558.08
  6. Step 6: Final answer
    x = 12,705.13

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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.