Home / 28,088.46-38,764.49-15,515.64

Finding the Fourth Proportional to 28,088.46, 38,764.49 and 15,515.64

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Solution

The fourth proportional to 28,088.46, 38,764.49 and 15,515.64 is: 21,412.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.46 : 38,764.49 = 15,515.64 : x
  2. Step 2: Convert to fraction form
    28,088.46/38,764.49 = 15,515.64/x
  3. Step 3: Cross multiply
    28,088.46x = 38,764.49 × 15,515.64
  4. Step 4: Simplify right side
    28,088.46x = 601,455,794.05
  5. Step 5: Solve for x
    x = 601,455,794.05/28,088.46
  6. Step 6: Final answer
    x = 21,412.91

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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.