Home / 15,635.87-21,577.47-8,465.75

Finding the Fourth Proportional to 15,635.87, 21,577.47 and 8,465.75

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Solution

The fourth proportional to 15,635.87, 21,577.47 and 8,465.75 is: 11,682.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,635.87 : 21,577.47 = 8,465.75 : x
  2. Step 2: Convert to fraction form
    15,635.87/21,577.47 = 8,465.75/x
  3. Step 3: Cross multiply
    15,635.87x = 21,577.47 × 8,465.75
  4. Step 4: Simplify right side
    15,635.87x = 182,669,455.55
  5. Step 5: Solve for x
    x = 182,669,455.55/15,635.87
  6. Step 6: Final answer
    x = 11,682.72

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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.