Home / 34,539.40-47,660.11-21,787.77

Finding the Fourth Proportional to 34,539.40, 47,660.11 and 21,787.77

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Solution

The fourth proportional to 34,539.40, 47,660.11 and 21,787.77 is: 30,064.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,539.40 : 47,660.11 = 21,787.77 : x
  2. Step 2: Convert to fraction form
    34,539.40/47,660.11 = 21,787.77/x
  3. Step 3: Cross multiply
    34,539.40x = 47,660.11 × 21,787.77
  4. Step 4: Simplify right side
    34,539.40x = 1,038,407,514.85
  5. Step 5: Solve for x
    x = 1,038,407,514.85/34,539.40
  6. Step 6: Final answer
    x = 30,064.43

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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.