Home / 28,009.24-42,042.90-12,437.80

Finding the Fourth Proportional to 28,009.24, 42,042.90 and 12,437.80

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Solution

The fourth proportional to 28,009.24, 42,042.90 and 12,437.80 is: 18,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.24 : 42,042.90 = 12,437.80 : x
  2. Step 2: Convert to fraction form
    28,009.24/42,042.90 = 12,437.80/x
  3. Step 3: Cross multiply
    28,009.24x = 42,042.90 × 12,437.80
  4. Step 4: Simplify right side
    28,009.24x = 522,921,181.62
  5. Step 5: Solve for x
    x = 522,921,181.62/28,009.24
  6. Step 6: Final answer
    x = 18,669.60

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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.