Home / 18,771.40-28,159.98-5,622.28

Finding the Fourth Proportional to 18,771.40, 28,159.98 and 5,622.28

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Solution

The fourth proportional to 18,771.40, 28,159.98 and 5,622.28 is: 8,434.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.40 : 28,159.98 = 5,622.28 : x
  2. Step 2: Convert to fraction form
    18,771.40/28,159.98 = 5,622.28/x
  3. Step 3: Cross multiply
    18,771.40x = 28,159.98 × 5,622.28
  4. Step 4: Simplify right side
    18,771.40x = 158,323,292.35
  5. Step 5: Solve for x
    x = 158,323,292.35/18,771.40
  6. Step 6: Final answer
    x = 8,434.28

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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.