Home / 15,640.28-21,582.74-8,566.54

Finding the Fourth Proportional to 15,640.28, 21,582.74 and 8,566.54

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Solution

The fourth proportional to 15,640.28, 21,582.74 and 8,566.54 is: 11,821.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.28 : 21,582.74 = 8,566.54 : x
  2. Step 2: Convert to fraction form
    15,640.28/21,582.74 = 8,566.54/x
  3. Step 3: Cross multiply
    15,640.28x = 21,582.74 × 8,566.54
  4. Step 4: Simplify right side
    15,640.28x = 184,889,405.52
  5. Step 5: Solve for x
    x = 184,889,405.52/15,640.28
  6. Step 6: Final answer
    x = 11,821.36

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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.