Home / 12,640.83-18,970.65-4,750.62

Finding the Fourth Proportional to 12,640.83, 18,970.65 and 4,750.62

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Solution

The fourth proportional to 12,640.83, 18,970.65 and 4,750.62 is: 7,129.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.83 : 18,970.65 = 4,750.62 : x
  2. Step 2: Convert to fraction form
    12,640.83/18,970.65 = 4,750.62/x
  3. Step 3: Cross multiply
    12,640.83x = 18,970.65 × 4,750.62
  4. Step 4: Simplify right side
    12,640.83x = 90,122,349.30
  5. Step 5: Solve for x
    x = 90,122,349.30/12,640.83
  6. Step 6: Final answer
    x = 7,129.46

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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.