Home / 28,379.60-42,589.56-12,810.32

Finding the Fourth Proportional to 28,379.60, 42,589.56 and 12,810.32

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Solution

The fourth proportional to 28,379.60, 42,589.56 and 12,810.32 is: 19,224.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.60 : 42,589.56 = 12,810.32 : x
  2. Step 2: Convert to fraction form
    28,379.60/42,589.56 = 12,810.32/x
  3. Step 3: Cross multiply
    28,379.60x = 42,589.56 × 12,810.32
  4. Step 4: Simplify right side
    28,379.60x = 545,585,892.26
  5. Step 5: Solve for x
    x = 545,585,892.26/28,379.60
  6. Step 6: Final answer
    x = 19,224.58

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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.