Home / 28,040.64-42,059.52-8,319.36

Finding the Fourth Proportional to 28,040.64, 42,059.52 and 8,319.36

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Solution

The fourth proportional to 28,040.64, 42,059.52 and 8,319.36 is: 12,478.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040.64 : 42,059.52 = 8,319.36 : x
  2. Step 2: Convert to fraction form
    28,040.64/42,059.52 = 8,319.36/x
  3. Step 3: Cross multiply
    28,040.64x = 42,059.52 × 8,319.36
  4. Step 4: Simplify right side
    28,040.64x = 349,908,288.31
  5. Step 5: Solve for x
    x = 349,908,288.31/28,040.64
  6. Step 6: Final answer
    x = 12,478.61

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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.