Home / 18,910.50-28,363.23-6,430.02

Finding the Fourth Proportional to 18,910.50, 28,363.23 and 6,430.02

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Solution

The fourth proportional to 18,910.50, 28,363.23 and 6,430.02 is: 9,644.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.50 : 28,363.23 = 6,430.02 : x
  2. Step 2: Convert to fraction form
    18,910.50/28,363.23 = 6,430.02/x
  3. Step 3: Cross multiply
    18,910.50x = 28,363.23 × 6,430.02
  4. Step 4: Simplify right side
    18,910.50x = 182,376,136.16
  5. Step 5: Solve for x
    x = 182,376,136.16/18,910.50
  6. Step 6: Final answer
    x = 9,644.17

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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.