Home / 15,746.08-21,729.42-8,672.32

Finding the Fourth Proportional to 15,746.08, 21,729.42 and 8,672.32

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Solution

The fourth proportional to 15,746.08, 21,729.42 and 8,672.32 is: 11,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.08 : 21,729.42 = 8,672.32 : x
  2. Step 2: Convert to fraction form
    15,746.08/21,729.42 = 8,672.32/x
  3. Step 3: Cross multiply
    15,746.08x = 21,729.42 × 8,672.32
  4. Step 4: Simplify right side
    15,746.08x = 188,444,483.65
  5. Step 5: Solve for x
    x = 188,444,483.65/15,746.08
  6. Step 6: Final answer
    x = 11,967.71

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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.