Home / 28,518.18-42,779.43-7,741.38

Finding the Fourth Proportional to 28,518.18, 42,779.43 and 7,741.38

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Solution

The fourth proportional to 28,518.18, 42,779.43 and 7,741.38 is: 11,612.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.18 : 42,779.43 = 7,741.38 : x
  2. Step 2: Convert to fraction form
    28,518.18/42,779.43 = 7,741.38/x
  3. Step 3: Cross multiply
    28,518.18x = 42,779.43 × 7,741.38
  4. Step 4: Simplify right side
    28,518.18x = 331,171,823.81
  5. Step 5: Solve for x
    x = 331,171,823.81/28,518.18
  6. Step 6: Final answer
    x = 11,612.66

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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.