Home / 13,312.74-18,372.60-7,345.56

Finding the Fourth Proportional to 13,312.74, 18,372.60 and 7,345.56

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Solution

The fourth proportional to 13,312.74, 18,372.60 and 7,345.56 is: 10,137.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.74 : 18,372.60 = 7,345.56 : x
  2. Step 2: Convert to fraction form
    13,312.74/18,372.60 = 7,345.56/x
  3. Step 3: Cross multiply
    13,312.74x = 18,372.60 × 7,345.56
  4. Step 4: Simplify right side
    13,312.74x = 134,957,035.66
  5. Step 5: Solve for x
    x = 134,957,035.66/13,312.74
  6. Step 6: Final answer
    x = 10,137.43

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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.