Home / 13,588.83-18,753.93-7,621.56

Finding the Fourth Proportional to 13,588.83, 18,753.93 and 7,621.56

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Solution

The fourth proportional to 13,588.83, 18,753.93 and 7,621.56 is: 10,518.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.83 : 18,753.93 = 7,621.56 : x
  2. Step 2: Convert to fraction form
    13,588.83/18,753.93 = 7,621.56/x
  3. Step 3: Cross multiply
    13,588.83x = 18,753.93 × 7,621.56
  4. Step 4: Simplify right side
    13,588.83x = 142,934,202.73
  5. Step 5: Solve for x
    x = 142,934,202.73/13,588.83
  6. Step 6: Final answer
    x = 10,518.51

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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.