Home / 10,830.06-16,219.50-5,287.20

Finding the Fourth Proportional to 10,830.06, 16,219.50 and 5,287.20

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Solution

The fourth proportional to 10,830.06, 16,219.50 and 5,287.20 is: 7,918.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,830.06 : 16,219.50 = 5,287.20 : x
  2. Step 2: Convert to fraction form
    10,830.06/16,219.50 = 5,287.20/x
  3. Step 3: Cross multiply
    10,830.06x = 16,219.50 × 5,287.20
  4. Step 4: Simplify right side
    10,830.06x = 85,755,740.40
  5. Step 5: Solve for x
    x = 85,755,740.40/10,830.06
  6. Step 6: Final answer
    x = 7,918.31

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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.