Home / 15,492.84-21,380.04-8,778.44

Finding the Fourth Proportional to 15,492.84, 21,380.04 and 8,778.44

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Solution

The fourth proportional to 15,492.84, 21,380.04 and 8,778.44 is: 12,114.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,492.84 : 21,380.04 = 8,778.44 : x
  2. Step 2: Convert to fraction form
    15,492.84/21,380.04 = 8,778.44/x
  3. Step 3: Cross multiply
    15,492.84x = 21,380.04 × 8,778.44
  4. Step 4: Simplify right side
    15,492.84x = 187,683,398.34
  5. Step 5: Solve for x
    x = 187,683,398.34/15,492.84
  6. Step 6: Final answer
    x = 12,114.20

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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.