Home / 28,362.06-39,140.92-15,787.62

Finding the Fourth Proportional to 28,362.06, 39,140.92 and 15,787.62

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Solution

The fourth proportional to 28,362.06, 39,140.92 and 15,787.62 is: 21,787.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,362.06 : 39,140.92 = 15,787.62 : x
  2. Step 2: Convert to fraction form
    28,362.06/39,140.92 = 15,787.62/x
  3. Step 3: Cross multiply
    28,362.06x = 39,140.92 × 15,787.62
  4. Step 4: Simplify right side
    28,362.06x = 617,941,971.41
  5. Step 5: Solve for x
    x = 617,941,971.41/28,362.06
  6. Step 6: Final answer
    x = 21,787.63

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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.