Home / 11,209.15-15,469.14-6,430.51

Finding the Fourth Proportional to 11,209.15, 15,469.14 and 6,430.51

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Solution

The fourth proportional to 11,209.15, 15,469.14 and 6,430.51 is: 8,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.15 : 15,469.14 = 6,430.51 : x
  2. Step 2: Convert to fraction form
    11,209.15/15,469.14 = 6,430.51/x
  3. Step 3: Cross multiply
    11,209.15x = 15,469.14 × 6,430.51
  4. Step 4: Simplify right side
    11,209.15x = 99,474,459.46
  5. Step 5: Solve for x
    x = 99,474,459.46/11,209.15
  6. Step 6: Final answer
    x = 8,874.40

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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.