Home / 28,730.74-39,649.22-15,984.32

Finding the Fourth Proportional to 28,730.74, 39,649.22 and 15,984.32

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Solution

The fourth proportional to 28,730.74, 39,649.22 and 15,984.32 is: 22,058.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730.74 : 39,649.22 = 15,984.32 : x
  2. Step 2: Convert to fraction form
    28,730.74/39,649.22 = 15,984.32/x
  3. Step 3: Cross multiply
    28,730.74x = 39,649.22 × 15,984.32
  4. Step 4: Simplify right side
    28,730.74x = 633,765,820.23
  5. Step 5: Solve for x
    x = 633,765,820.23/28,730.74
  6. Step 6: Final answer
    x = 22,058.81

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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.