Home / 15,639.95-21,583.20-8,566.38

Finding the Fourth Proportional to 15,639.95, 21,583.20 and 8,566.38

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Solution

The fourth proportional to 15,639.95, 21,583.20 and 8,566.38 is: 11,821.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.95 : 21,583.20 = 8,566.38 : x
  2. Step 2: Convert to fraction form
    15,639.95/21,583.20 = 8,566.38/x
  3. Step 3: Cross multiply
    15,639.95x = 21,583.20 × 8,566.38
  4. Step 4: Simplify right side
    15,639.95x = 184,889,892.82
  5. Step 5: Solve for x
    x = 184,889,892.82/15,639.95
  6. Step 6: Final answer
    x = 11,821.65

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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.