Home / 12,383.20-18,574.80-4,590.40

Finding the Fourth Proportional to 12,383.20, 18,574.80 and 4,590.40

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Solution

The fourth proportional to 12,383.20, 18,574.80 and 4,590.40 is: 6,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383.20 : 18,574.80 = 4,590.40 : x
  2. Step 2: Convert to fraction form
    12,383.20/18,574.80 = 4,590.40/x
  3. Step 3: Cross multiply
    12,383.20x = 18,574.80 × 4,590.40
  4. Step 4: Simplify right side
    12,383.20x = 85,265,761.92
  5. Step 5: Solve for x
    x = 85,265,761.92/12,383.20
  6. Step 6: Final answer
    x = 6,885.60

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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.