Home / 28,115.07-38,797.48-15,368.91

Finding the Fourth Proportional to 28,115.07, 38,797.48 and 15,368.91

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Solution

The fourth proportional to 28,115.07, 38,797.48 and 15,368.91 is: 21,208.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.07 : 38,797.48 = 15,368.91 : x
  2. Step 2: Convert to fraction form
    28,115.07/38,797.48 = 15,368.91/x
  3. Step 3: Cross multiply
    28,115.07x = 38,797.48 × 15,368.91
  4. Step 4: Simplify right side
    28,115.07x = 596,274,978.35
  5. Step 5: Solve for x
    x = 596,274,978.35/28,115.07
  6. Step 6: Final answer
    x = 21,208.38

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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.