Home / 15,863.04-21,890.86-9,148.55

Finding the Fourth Proportional to 15,863.04, 21,890.86 and 9,148.55

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Solution

The fourth proportional to 15,863.04, 21,890.86 and 9,148.55 is: 12,624.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,863.04 : 21,890.86 = 9,148.55 : x
  2. Step 2: Convert to fraction form
    15,863.04/21,890.86 = 9,148.55/x
  3. Step 3: Cross multiply
    15,863.04x = 21,890.86 × 9,148.55
  4. Step 4: Simplify right side
    15,863.04x = 200,269,494.93
  5. Step 5: Solve for x
    x = 200,269,494.93/15,863.04
  6. Step 6: Final answer
    x = 12,624.91

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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.