Home / 13,618.02-18,791.95-7,649.54

Finding the Fourth Proportional to 13,618.02, 18,791.95 and 7,649.54

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Solution

The fourth proportional to 13,618.02, 18,791.95 and 7,649.54 is: 10,555.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.02 : 18,791.95 = 7,649.54 : x
  2. Step 2: Convert to fraction form
    13,618.02/18,791.95 = 7,649.54/x
  3. Step 3: Cross multiply
    13,618.02x = 18,791.95 × 7,649.54
  4. Step 4: Simplify right side
    13,618.02x = 143,749,744.93
  5. Step 5: Solve for x
    x = 143,749,744.93/13,618.02
  6. Step 6: Final answer
    x = 10,555.84

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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.