Home / 28,429.34-39,232-15,683.74

Finding the Fourth Proportional to 28,429.34, 39,232 and 15,683.74

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Solution

The fourth proportional to 28,429.34, 39,232 and 15,683.74 is: 21,643.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.34 : 39,232 = 15,683.74 : x
  2. Step 2: Convert to fraction form
    28,429.34/39,232 = 15,683.74/x
  3. Step 3: Cross multiply
    28,429.34x = 39,232 × 15,683.74
  4. Step 4: Simplify right side
    28,429.34x = 615,304,487.68
  5. Step 5: Solve for x
    x = 615,304,487.68/28,429.34
  6. Step 6: Final answer
    x = 21,643.29

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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.