Home / 15,633.65-21,575.88-8,561.13

Finding the Fourth Proportional to 15,633.65, 21,575.88 and 8,561.13

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Solution

The fourth proportional to 15,633.65, 21,575.88 and 8,561.13 is: 11,815.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,633.65 : 21,575.88 = 8,561.13 : x
  2. Step 2: Convert to fraction form
    15,633.65/21,575.88 = 8,561.13/x
  3. Step 3: Cross multiply
    15,633.65x = 21,575.88 × 8,561.13
  4. Step 4: Simplify right side
    15,633.65x = 184,713,913.54
  5. Step 5: Solve for x
    x = 184,713,913.54/15,633.65
  6. Step 6: Final answer
    x = 11,815.15

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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.