Home / 28,425.02-42,674.60-19,106.78

Finding the Fourth Proportional to 28,425.02, 42,674.60 and 19,106.78

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Solution

The fourth proportional to 28,425.02, 42,674.60 and 19,106.78 is: 28,685.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.02 : 42,674.60 = 19,106.78 : x
  2. Step 2: Convert to fraction form
    28,425.02/42,674.60 = 19,106.78/x
  3. Step 3: Cross multiply
    28,425.02x = 42,674.60 × 19,106.78
  4. Step 4: Simplify right side
    28,425.02x = 815,374,028.18
  5. Step 5: Solve for x
    x = 815,374,028.18/28,425.02
  6. Step 6: Final answer
    x = 28,685.09

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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.