Home / 15,639.80-21,583.03-8,566.20

Finding the Fourth Proportional to 15,639.80, 21,583.03 and 8,566.20

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Solution

The fourth proportional to 15,639.80, 21,583.03 and 8,566.20 is: 11,821.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.80 : 21,583.03 = 8,566.20 : x
  2. Step 2: Convert to fraction form
    15,639.80/21,583.03 = 8,566.20/x
  3. Step 3: Cross multiply
    15,639.80x = 21,583.03 × 8,566.20
  4. Step 4: Simplify right side
    15,639.80x = 184,884,626.96
  5. Step 5: Solve for x
    x = 184,884,626.96/15,639.80
  6. Step 6: Final answer
    x = 11,821.42

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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.