Home / 28,830.84-39,787.74-18,216.60

Finding the Fourth Proportional to 28,830.84, 39,787.74 and 18,216.60

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Solution

The fourth proportional to 28,830.84, 39,787.74 and 18,216.60 is: 25,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.84 : 39,787.74 = 18,216.60 : x
  2. Step 2: Convert to fraction form
    28,830.84/39,787.74 = 18,216.60/x
  3. Step 3: Cross multiply
    28,830.84x = 39,787.74 × 18,216.60
  4. Step 4: Simplify right side
    28,830.84x = 724,797,344.48
  5. Step 5: Solve for x
    x = 724,797,344.48/28,830.84
  6. Step 6: Final answer
    x = 25,139.65

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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.