Home / 11,170.34-15,411.21-7,139.52

Finding the Fourth Proportional to 11,170.34, 15,411.21 and 7,139.52

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Solution

The fourth proportional to 11,170.34, 15,411.21 and 7,139.52 is: 9,850.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,170.34 : 15,411.21 = 7,139.52 : x
  2. Step 2: Convert to fraction form
    11,170.34/15,411.21 = 7,139.52/x
  3. Step 3: Cross multiply
    11,170.34x = 15,411.21 × 7,139.52
  4. Step 4: Simplify right side
    11,170.34x = 110,028,606.32
  5. Step 5: Solve for x
    x = 110,028,606.32/11,170.34
  6. Step 6: Final answer
    x = 9,850.07

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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.