Home / 19,962.20-29,910.90-12,553.40

Finding the Fourth Proportional to 19,962.20, 29,910.90 and 12,553.40

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Solution

The fourth proportional to 19,962.20, 29,910.90 and 12,553.40 is: 18,809.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,962.20 : 29,910.90 = 12,553.40 : x
  2. Step 2: Convert to fraction form
    19,962.20/29,910.90 = 12,553.40/x
  3. Step 3: Cross multiply
    19,962.20x = 29,910.90 × 12,553.40
  4. Step 4: Simplify right side
    19,962.20x = 375,483,492.06
  5. Step 5: Solve for x
    x = 375,483,492.06/19,962.20
  6. Step 6: Final answer
    x = 18,809.72

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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.