Home / 28,905.24-43,358.10-8,128.92

Finding the Fourth Proportional to 28,905.24, 43,358.10 and 8,128.92

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Solution

The fourth proportional to 28,905.24, 43,358.10 and 8,128.92 is: 12,193.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.24 : 43,358.10 = 8,128.92 : x
  2. Step 2: Convert to fraction form
    28,905.24/43,358.10 = 8,128.92/x
  3. Step 3: Cross multiply
    28,905.24x = 43,358.10 × 8,128.92
  4. Step 4: Simplify right side
    28,905.24x = 352,454,526.25
  5. Step 5: Solve for x
    x = 352,454,526.25/28,905.24
  6. Step 6: Final answer
    x = 12,193.45

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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.