Home / 28,011.28-42,004.60-8,291.36

Finding the Fourth Proportional to 28,011.28, 42,004.60 and 8,291.36

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Solution

The fourth proportional to 28,011.28, 42,004.60 and 8,291.36 is: 12,433.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.28 : 42,004.60 = 8,291.36 : x
  2. Step 2: Convert to fraction form
    28,011.28/42,004.60 = 8,291.36/x
  3. Step 3: Cross multiply
    28,011.28x = 42,004.60 × 8,291.36
  4. Step 4: Simplify right side
    28,011.28x = 348,275,260.26
  5. Step 5: Solve for x
    x = 348,275,260.26/28,011.28
  6. Step 6: Final answer
    x = 12,433.39

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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.