Home / 12,572.10-18,858.06-4,780.92

Finding the Fourth Proportional to 12,572.10, 18,858.06 and 4,780.92

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Solution

The fourth proportional to 12,572.10, 18,858.06 and 4,780.92 is: 7,171.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.10 : 18,858.06 = 4,780.92 : x
  2. Step 2: Convert to fraction form
    12,572.10/18,858.06 = 4,780.92/x
  3. Step 3: Cross multiply
    12,572.10x = 18,858.06 × 4,780.92
  4. Step 4: Simplify right side
    12,572.10x = 90,158,876.22
  5. Step 5: Solve for x
    x = 90,158,876.22/12,572.10
  6. Step 6: Final answer
    x = 7,171.35

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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.