Home / 28,642.74-42,946.79-12,844.90

Finding the Fourth Proportional to 28,642.74, 42,946.79 and 12,844.90

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Solution

The fourth proportional to 28,642.74, 42,946.79 and 12,844.90 is: 19,259.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,642.74 : 42,946.79 = 12,844.90 : x
  2. Step 2: Convert to fraction form
    28,642.74/42,946.79 = 12,844.90/x
  3. Step 3: Cross multiply
    28,642.74x = 42,946.79 × 12,844.90
  4. Step 4: Simplify right side
    28,642.74x = 551,647,222.87
  5. Step 5: Solve for x
    x = 551,647,222.87/28,642.74
  6. Step 6: Final answer
    x = 19,259.58

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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.