Home / 13,721.84-20,586.18-6,331.45

Finding the Fourth Proportional to 13,721.84, 20,586.18 and 6,331.45

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Solution

The fourth proportional to 13,721.84, 20,586.18 and 6,331.45 is: 9,498.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.84 : 20,586.18 = 6,331.45 : x
  2. Step 2: Convert to fraction form
    13,721.84/20,586.18 = 6,331.45/x
  3. Step 3: Cross multiply
    13,721.84x = 20,586.18 × 6,331.45
  4. Step 4: Simplify right side
    13,721.84x = 130,340,369.36
  5. Step 5: Solve for x
    x = 130,340,369.36/13,721.84
  6. Step 6: Final answer
    x = 9,498.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.