Home / 28,232.16-38,960.64-15,656.64

Finding the Fourth Proportional to 28,232.16, 38,960.64 and 15,656.64

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Solution

The fourth proportional to 28,232.16, 38,960.64 and 15,656.64 is: 21,606.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,232.16 : 38,960.64 = 15,656.64 : x
  2. Step 2: Convert to fraction form
    28,232.16/38,960.64 = 15,656.64/x
  3. Step 3: Cross multiply
    28,232.16x = 38,960.64 × 15,656.64
  4. Step 4: Simplify right side
    28,232.16x = 609,992,714.65
  5. Step 5: Solve for x
    x = 609,992,714.65/28,232.16
  6. Step 6: Final answer
    x = 21,606.31

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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.