Home / 20,840.13-31,260.06-5,257.77

Finding the Fourth Proportional to 20,840.13, 31,260.06 and 5,257.77

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Solution

The fourth proportional to 20,840.13, 31,260.06 and 5,257.77 is: 7,886.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.13 : 31,260.06 = 5,257.77 : x
  2. Step 2: Convert to fraction form
    20,840.13/31,260.06 = 5,257.77/x
  3. Step 3: Cross multiply
    20,840.13x = 31,260.06 × 5,257.77
  4. Step 4: Simplify right side
    20,840.13x = 164,358,205.67
  5. Step 5: Solve for x
    x = 164,358,205.67/20,840.13
  6. Step 6: Final answer
    x = 7,886.62

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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.