Home / 13,203.36-18,220.32-7,614.72

Finding the Fourth Proportional to 13,203.36, 18,220.32 and 7,614.72

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Solution

The fourth proportional to 13,203.36, 18,220.32 and 7,614.72 is: 10,508.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.36 : 18,220.32 = 7,614.72 : x
  2. Step 2: Convert to fraction form
    13,203.36/18,220.32 = 7,614.72/x
  3. Step 3: Cross multiply
    13,203.36x = 18,220.32 × 7,614.72
  4. Step 4: Simplify right side
    13,203.36x = 138,742,635.11
  5. Step 5: Solve for x
    x = 138,742,635.11/13,203.36
  6. Step 6: Final answer
    x = 10,508.13

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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.