Home / 12,630.18-18,948.05-3,865.77

Finding the Fourth Proportional to 12,630.18, 18,948.05 and 3,865.77

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Solution

The fourth proportional to 12,630.18, 18,948.05 and 3,865.77 is: 5,799.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.18 : 18,948.05 = 3,865.77 : x
  2. Step 2: Convert to fraction form
    12,630.18/18,948.05 = 3,865.77/x
  3. Step 3: Cross multiply
    12,630.18x = 18,948.05 × 3,865.77
  4. Step 4: Simplify right side
    12,630.18x = 73,248,783.92
  5. Step 5: Solve for x
    x = 73,248,783.92/12,630.18
  6. Step 6: Final answer
    x = 5,799.50

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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.