Home / 20,683.25-28,547.75-12,304.61

Finding the Fourth Proportional to 20,683.25, 28,547.75 and 12,304.61

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Solution

The fourth proportional to 20,683.25, 28,547.75 and 12,304.61 is: 16,983.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.25 : 28,547.75 = 12,304.61 : x
  2. Step 2: Convert to fraction form
    20,683.25/28,547.75 = 12,304.61/x
  3. Step 3: Cross multiply
    20,683.25x = 28,547.75 × 12,304.61
  4. Step 4: Simplify right side
    20,683.25x = 351,268,868.60
  5. Step 5: Solve for x
    x = 351,268,868.60/20,683.25
  6. Step 6: Final answer
    x = 16,983.25

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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.