Home / 15,635.91-21,577.59-8,465.79

Finding the Fourth Proportional to 15,635.91, 21,577.59 and 8,465.79

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Solution

The fourth proportional to 15,635.91, 21,577.59 and 8,465.79 is: 11,682.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,635.91 : 21,577.59 = 8,465.79 : x
  2. Step 2: Convert to fraction form
    15,635.91/21,577.59 = 8,465.79/x
  3. Step 3: Cross multiply
    15,635.91x = 21,577.59 × 8,465.79
  4. Step 4: Simplify right side
    15,635.91x = 182,671,345.65
  5. Step 5: Solve for x
    x = 182,671,345.65/15,635.91
  6. Step 6: Final answer
    x = 11,682.81

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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.