Home / 28,009.26-42,001.60-8,289.36

Finding the Fourth Proportional to 28,009.26, 42,001.60 and 8,289.36

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Solution

The fourth proportional to 28,009.26, 42,001.60 and 8,289.36 is: 12,430.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.26 : 42,001.60 = 8,289.36 : x
  2. Step 2: Convert to fraction form
    28,009.26/42,001.60 = 8,289.36/x
  3. Step 3: Cross multiply
    28,009.26x = 42,001.60 × 8,289.36
  4. Step 4: Simplify right side
    28,009.26x = 348,166,382.98
  5. Step 5: Solve for x
    x = 348,166,382.98/28,009.26
  6. Step 6: Final answer
    x = 12,430.40

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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.