Home / 13,203.36-18,219.60-7,613.28

Finding the Fourth Proportional to 13,203.36, 18,219.60 and 7,613.28

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Solution

The fourth proportional to 13,203.36, 18,219.60 and 7,613.28 is: 10,505.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.36 : 18,219.60 = 7,613.28 : x
  2. Step 2: Convert to fraction form
    13,203.36/18,219.60 = 7,613.28/x
  3. Step 3: Cross multiply
    13,203.36x = 18,219.60 × 7,613.28
  4. Step 4: Simplify right side
    13,203.36x = 138,710,916.29
  5. Step 5: Solve for x
    x = 138,710,916.29/13,203.36
  6. Step 6: Final answer
    x = 10,505.73

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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.