Home / 28,251.52-38,987.12-15,676.28

Finding the Fourth Proportional to 28,251.52, 38,987.12 and 15,676.28

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Solution

The fourth proportional to 28,251.52, 38,987.12 and 15,676.28 is: 21,633.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.52 : 38,987.12 = 15,676.28 : x
  2. Step 2: Convert to fraction form
    28,251.52/38,987.12 = 15,676.28/x
  3. Step 3: Cross multiply
    28,251.52x = 38,987.12 × 15,676.28
  4. Step 4: Simplify right side
    28,251.52x = 611,173,009.51
  5. Step 5: Solve for x
    x = 611,173,009.51/28,251.52
  6. Step 6: Final answer
    x = 21,633.28

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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.