Home / 13,191.85-18,204.51-7,223.23

Finding the Fourth Proportional to 13,191.85, 18,204.51 and 7,223.23

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Solution

The fourth proportional to 13,191.85, 18,204.51 and 7,223.23 is: 9,967.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.85 : 18,204.51 = 7,223.23 : x
  2. Step 2: Convert to fraction form
    13,191.85/18,204.51 = 7,223.23/x
  3. Step 3: Cross multiply
    13,191.85x = 18,204.51 × 7,223.23
  4. Step 4: Simplify right side
    13,191.85x = 131,495,362.77
  5. Step 5: Solve for x
    x = 131,495,362.77/13,191.85
  6. Step 6: Final answer
    x = 9,967.92

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Double scale
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Similar ratio
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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.