Home / 28,091.07-38,764.94-15,515.55

Finding the Fourth Proportional to 28,091.07, 38,764.94 and 15,515.55

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Solution

The fourth proportional to 28,091.07, 38,764.94 and 15,515.55 is: 21,411.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.07 : 38,764.94 = 15,515.55 : x
  2. Step 2: Convert to fraction form
    28,091.07/38,764.94 = 15,515.55/x
  3. Step 3: Cross multiply
    28,091.07x = 38,764.94 × 15,515.55
  4. Step 4: Simplify right side
    28,091.07x = 601,459,287.24
  5. Step 5: Solve for x
    x = 601,459,287.24/28,091.07
  6. Step 6: Final answer
    x = 21,411.05

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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.