Home / 28,100.02-38,778.81-15,525.58

Finding the Fourth Proportional to 28,100.02, 38,778.81 and 15,525.58

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Solution

The fourth proportional to 28,100.02, 38,778.81 and 15,525.58 is: 21,425.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.02 : 38,778.81 = 15,525.58 : x
  2. Step 2: Convert to fraction form
    28,100.02/38,778.81 = 15,525.58/x
  3. Step 3: Cross multiply
    28,100.02x = 38,778.81 × 15,525.58
  4. Step 4: Simplify right side
    28,100.02x = 602,063,516.96
  5. Step 5: Solve for x
    x = 602,063,516.96/28,100.02
  6. Step 6: Final answer
    x = 21,425.73

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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.