Home / 15,639.85-21,583.31-8,566.28

Finding the Fourth Proportional to 15,639.85, 21,583.31 and 8,566.28

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Solution

The fourth proportional to 15,639.85, 21,583.31 and 8,566.28 is: 11,821.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.85 : 21,583.31 = 8,566.28 : x
  2. Step 2: Convert to fraction form
    15,639.85/21,583.31 = 8,566.28/x
  3. Step 3: Cross multiply
    15,639.85x = 21,583.31 × 8,566.28
  4. Step 4: Simplify right side
    15,639.85x = 184,888,526.04
  5. Step 5: Solve for x
    x = 184,888,526.04/15,639.85
  6. Step 6: Final answer
    x = 11,821.63

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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.