Home / 10,940.20-16,430.10-9,579.40

Finding the Fourth Proportional to 10,940.20, 16,430.10 and 9,579.40

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Solution

The fourth proportional to 10,940.20, 16,430.10 and 9,579.40 is: 14,386.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,940.20 : 16,430.10 = 9,579.40 : x
  2. Step 2: Convert to fraction form
    10,940.20/16,430.10 = 9,579.40/x
  3. Step 3: Cross multiply
    10,940.20x = 16,430.10 × 9,579.40
  4. Step 4: Simplify right side
    10,940.20x = 157,390,499.94
  5. Step 5: Solve for x
    x = 157,390,499.94/10,940.20
  6. Step 6: Final answer
    x = 14,386.44

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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.