Home / 34,787.16-47,990.34-20,634.84

Finding the Fourth Proportional to 34,787.16, 47,990.34 and 20,634.84

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Solution

The fourth proportional to 34,787.16, 47,990.34 and 20,634.84 is: 28,466.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,787.16 : 47,990.34 = 20,634.84 : x
  2. Step 2: Convert to fraction form
    34,787.16/47,990.34 = 20,634.84/x
  3. Step 3: Cross multiply
    34,787.16x = 47,990.34 × 20,634.84
  4. Step 4: Simplify right side
    34,787.16x = 990,272,987.45
  5. Step 5: Solve for x
    x = 990,272,987.45/34,787.16
  6. Step 6: Final answer
    x = 28,466.62

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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.