Home / 20,304.40-30,456.60-8,616.10

Finding the Fourth Proportional to 20,304.40, 30,456.60 and 8,616.10

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Solution

The fourth proportional to 20,304.40, 30,456.60 and 8,616.10 is: 12,924.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,304.40 : 30,456.60 = 8,616.10 : x
  2. Step 2: Convert to fraction form
    20,304.40/30,456.60 = 8,616.10/x
  3. Step 3: Cross multiply
    20,304.40x = 30,456.60 × 8,616.10
  4. Step 4: Simplify right side
    20,304.40x = 262,417,111.26
  5. Step 5: Solve for x
    x = 262,417,111.26/20,304.40
  6. Step 6: Final answer
    x = 12,924.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.