Home / 12,580.11-18,870.17-5,646.51

Finding the Fourth Proportional to 12,580.11, 18,870.17 and 5,646.51

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Solution

The fourth proportional to 12,580.11, 18,870.17 and 5,646.51 is: 8,469.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,580.11 : 18,870.17 = 5,646.51 : x
  2. Step 2: Convert to fraction form
    12,580.11/18,870.17 = 5,646.51/x
  3. Step 3: Cross multiply
    12,580.11x = 18,870.17 × 5,646.51
  4. Step 4: Simplify right side
    12,580.11x = 106,550,575.37
  5. Step 5: Solve for x
    x = 106,550,575.37/12,580.11
  6. Step 6: Final answer
    x = 8,469.77

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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.