Home / 15,304.50-21,120.21-9,020.70

Finding the Fourth Proportional to 15,304.50, 21,120.21 and 9,020.70

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Solution

The fourth proportional to 15,304.50, 21,120.21 and 9,020.70 is: 12,448.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304.50 : 21,120.21 = 9,020.70 : x
  2. Step 2: Convert to fraction form
    15,304.50/21,120.21 = 9,020.70/x
  3. Step 3: Cross multiply
    15,304.50x = 21,120.21 × 9,020.70
  4. Step 4: Simplify right side
    15,304.50x = 190,519,078.35
  5. Step 5: Solve for x
    x = 190,519,078.35/15,304.50
  6. Step 6: Final answer
    x = 12,448.57

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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.