Home / 11,109.03-15,332.13-6,392.40

Finding the Fourth Proportional to 11,109.03, 15,332.13 and 6,392.40

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Solution

The fourth proportional to 11,109.03, 15,332.13 and 6,392.40 is: 8,822.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.03 : 15,332.13 = 6,392.40 : x
  2. Step 2: Convert to fraction form
    11,109.03/15,332.13 = 6,392.40/x
  3. Step 3: Cross multiply
    11,109.03x = 15,332.13 × 6,392.40
  4. Step 4: Simplify right side
    11,109.03x = 98,009,107.81
  5. Step 5: Solve for x
    x = 98,009,107.81/11,109.03
  6. Step 6: Final answer
    x = 8,822.47

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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.