Home / 12,572.40-18,855.44-5,178.92

Finding the Fourth Proportional to 12,572.40, 18,855.44 and 5,178.92

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Solution

The fourth proportional to 12,572.40, 18,855.44 and 5,178.92 is: 7,767.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.40 : 18,855.44 = 5,178.92 : x
  2. Step 2: Convert to fraction form
    12,572.40/18,855.44 = 5,178.92/x
  3. Step 3: Cross multiply
    12,572.40x = 18,855.44 × 5,178.92
  4. Step 4: Simplify right side
    12,572.40x = 97,650,815.32
  5. Step 5: Solve for x
    x = 97,650,815.32/12,572.40
  6. Step 6: Final answer
    x = 7,767.08

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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.