Home / 11,121.81-15,347.43-6,341.09

Finding the Fourth Proportional to 11,121.81, 15,347.43 and 6,341.09

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Solution

The fourth proportional to 11,121.81, 15,347.43 and 6,341.09 is: 8,750.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.81 : 15,347.43 = 6,341.09 : x
  2. Step 2: Convert to fraction form
    11,121.81/15,347.43 = 6,341.09/x
  3. Step 3: Cross multiply
    11,121.81x = 15,347.43 × 6,341.09
  4. Step 4: Simplify right side
    11,121.81x = 97,319,358.16
  5. Step 5: Solve for x
    x = 97,319,358.16/11,121.81
  6. Step 6: Final answer
    x = 8,750.32

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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.