Home / 15,640.20-21,583.26-8,566.20

Finding the Fourth Proportional to 15,640.20, 21,583.26 and 8,566.20

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Solution

The fourth proportional to 15,640.20, 21,583.26 and 8,566.20 is: 11,821.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.20 : 21,583.26 = 8,566.20 : x
  2. Step 2: Convert to fraction form
    15,640.20/21,583.26 = 8,566.20/x
  3. Step 3: Cross multiply
    15,640.20x = 21,583.26 × 8,566.20
  4. Step 4: Simplify right side
    15,640.20x = 184,886,521.81
  5. Step 5: Solve for x
    x = 184,886,521.81/15,640.20
  6. Step 6: Final answer
    x = 11,821.24

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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.