Home / 28,371.78-39,152.64-15,796.53

Finding the Fourth Proportional to 28,371.78, 39,152.64 and 15,796.53

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Solution

The fourth proportional to 28,371.78, 39,152.64 and 15,796.53 is: 21,798.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.78 : 39,152.64 = 15,796.53 : x
  2. Step 2: Convert to fraction form
    28,371.78/39,152.64 = 15,796.53/x
  3. Step 3: Cross multiply
    28,371.78x = 39,152.64 × 15,796.53
  4. Step 4: Simplify right side
    28,371.78x = 618,475,852.34
  5. Step 5: Solve for x
    x = 618,475,852.34/28,371.78
  6. Step 6: Final answer
    x = 21,798.98

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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.