Home / 28,544.43-39,390.69-15,623.64

Finding the Fourth Proportional to 28,544.43, 39,390.69 and 15,623.64

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Solution

The fourth proportional to 28,544.43, 39,390.69 and 15,623.64 is: 21,560.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,544.43 : 39,390.69 = 15,623.64 : x
  2. Step 2: Convert to fraction form
    28,544.43/39,390.69 = 15,623.64/x
  3. Step 3: Cross multiply
    28,544.43x = 39,390.69 × 15,623.64
  4. Step 4: Simplify right side
    28,544.43x = 615,425,959.91
  5. Step 5: Solve for x
    x = 615,425,959.91/28,544.43
  6. Step 6: Final answer
    x = 21,560.28

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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.