Home / 28,518.06-39,355.17-15,772.08

Finding the Fourth Proportional to 28,518.06, 39,355.17 and 15,772.08

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Solution

The fourth proportional to 28,518.06, 39,355.17 and 15,772.08 is: 21,765.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.06 : 39,355.17 = 15,772.08 : x
  2. Step 2: Convert to fraction form
    28,518.06/39,355.17 = 15,772.08/x
  3. Step 3: Cross multiply
    28,518.06x = 39,355.17 × 15,772.08
  4. Step 4: Simplify right side
    28,518.06x = 620,712,889.65
  5. Step 5: Solve for x
    x = 620,712,889.65/28,518.06
  6. Step 6: Final answer
    x = 21,765.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.