Home / 28,374.83-42,555.40-12,571.12

Finding the Fourth Proportional to 28,374.83, 42,555.40 and 12,571.12

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Solution

The fourth proportional to 28,374.83, 42,555.40 and 12,571.12 is: 18,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,374.83 : 42,555.40 = 12,571.12 : x
  2. Step 2: Convert to fraction form
    28,374.83/42,555.40 = 12,571.12/x
  3. Step 3: Cross multiply
    28,374.83x = 42,555.40 × 12,571.12
  4. Step 4: Simplify right side
    28,374.83x = 534,969,040.05
  5. Step 5: Solve for x
    x = 534,969,040.05/28,374.83
  6. Step 6: Final answer
    x = 18,853.65

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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.