Home / 11,925.90-16,457.04-6,620.40

Finding the Fourth Proportional to 11,925.90, 16,457.04 and 6,620.40

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Solution

The fourth proportional to 11,925.90, 16,457.04 and 6,620.40 is: 9,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.90 : 16,457.04 = 6,620.40 : x
  2. Step 2: Convert to fraction form
    11,925.90/16,457.04 = 6,620.40/x
  3. Step 3: Cross multiply
    11,925.90x = 16,457.04 × 6,620.40
  4. Step 4: Simplify right side
    11,925.90x = 108,952,187.62
  5. Step 5: Solve for x
    x = 108,952,187.62/11,925.90
  6. Step 6: Final answer
    x = 9,135.76

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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.