Home / 28,512.59-42,796.58-20,665.58

Finding the Fourth Proportional to 28,512.59, 42,796.58 and 20,665.58

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Solution

The fourth proportional to 28,512.59, 42,796.58 and 20,665.58 is: 31,018.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.59 : 42,796.58 = 20,665.58 : x
  2. Step 2: Convert to fraction form
    28,512.59/42,796.58 = 20,665.58/x
  3. Step 3: Cross multiply
    28,512.59x = 42,796.58 × 20,665.58
  4. Step 4: Simplify right side
    28,512.59x = 884,415,830.41
  5. Step 5: Solve for x
    x = 884,415,830.41/28,512.59
  6. Step 6: Final answer
    x = 31,018.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.