Home / 28,429.41-39,230.81-15,682.74

Finding the Fourth Proportional to 28,429.41, 39,230.81 and 15,682.74

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Solution

The fourth proportional to 28,429.41, 39,230.81 and 15,682.74 is: 21,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.41 : 39,230.81 = 15,682.74 : x
  2. Step 2: Convert to fraction form
    28,429.41/39,230.81 = 15,682.74/x
  3. Step 3: Cross multiply
    28,429.41x = 39,230.81 × 15,682.74
  4. Step 4: Simplify right side
    28,429.41x = 615,246,593.22
  5. Step 5: Solve for x
    x = 615,246,593.22/28,429.41
  6. Step 6: Final answer
    x = 21,641.20

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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.