Home / 15,474.18-21,355.43-8,759.79

Finding the Fourth Proportional to 15,474.18, 21,355.43 and 8,759.79

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Solution

The fourth proportional to 15,474.18, 21,355.43 and 8,759.79 is: 12,089.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.18 : 21,355.43 = 8,759.79 : x
  2. Step 2: Convert to fraction form
    15,474.18/21,355.43 = 8,759.79/x
  3. Step 3: Cross multiply
    15,474.18x = 21,355.43 × 8,759.79
  4. Step 4: Simplify right side
    15,474.18x = 187,069,038.36
  5. Step 5: Solve for x
    x = 187,069,038.36/15,474.18
  6. Step 6: Final answer
    x = 12,089.11

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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.