Home / 15,582.40-21,503.83-8,868.54

Finding the Fourth Proportional to 15,582.40, 21,503.83 and 8,868.54

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Solution

The fourth proportional to 15,582.40, 21,503.83 and 8,868.54 is: 12,238.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,582.40 : 21,503.83 = 8,868.54 : x
  2. Step 2: Convert to fraction form
    15,582.40/21,503.83 = 8,868.54/x
  3. Step 3: Cross multiply
    15,582.40x = 21,503.83 × 8,868.54
  4. Step 4: Simplify right side
    15,582.40x = 190,707,530.65
  5. Step 5: Solve for x
    x = 190,707,530.65/15,582.40
  6. Step 6: Final answer
    x = 12,238.65

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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.