Home / 15,014.71-20,720.16-8,300.51

Finding the Fourth Proportional to 15,014.71, 20,720.16 and 8,300.51

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Solution

The fourth proportional to 15,014.71, 20,720.16 and 8,300.51 is: 11,454.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.71 : 20,720.16 = 8,300.51 : x
  2. Step 2: Convert to fraction form
    15,014.71/20,720.16 = 8,300.51/x
  3. Step 3: Cross multiply
    15,014.71x = 20,720.16 × 8,300.51
  4. Step 4: Simplify right side
    15,014.71x = 171,987,791.68
  5. Step 5: Solve for x
    x = 171,987,791.68/15,014.71
  6. Step 6: Final answer
    x = 11,454.62

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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.