Home / 11,430.72-15,775.17-6,395.40

Finding the Fourth Proportional to 11,430.72, 15,775.17 and 6,395.40

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Solution

The fourth proportional to 11,430.72, 15,775.17 and 6,395.40 is: 8,826.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,430.72 : 15,775.17 = 6,395.40 : x
  2. Step 2: Convert to fraction form
    11,430.72/15,775.17 = 6,395.40/x
  3. Step 3: Cross multiply
    11,430.72x = 15,775.17 × 6,395.40
  4. Step 4: Simplify right side
    11,430.72x = 100,888,522.22
  5. Step 5: Solve for x
    x = 100,888,522.22/11,430.72
  6. Step 6: Final answer
    x = 8,826.09

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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.