Home / 17,911.40-26,867.10-5,430.80

Finding the Fourth Proportional to 17,911.40, 26,867.10 and 5,430.80

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Solution

The fourth proportional to 17,911.40, 26,867.10 and 5,430.80 is: 8,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,911.40 : 26,867.10 = 5,430.80 : x
  2. Step 2: Convert to fraction form
    17,911.40/26,867.10 = 5,430.80/x
  3. Step 3: Cross multiply
    17,911.40x = 26,867.10 × 5,430.80
  4. Step 4: Simplify right side
    17,911.40x = 145,909,846.68
  5. Step 5: Solve for x
    x = 145,909,846.68/17,911.40
  6. Step 6: Final answer
    x = 8,146.20

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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.