Home / 28,509.48-42,741.12-11,881.96

Finding the Fourth Proportional to 28,509.48, 42,741.12 and 11,881.96

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Solution

The fourth proportional to 28,509.48, 42,741.12 and 11,881.96 is: 17,813.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.48 : 42,741.12 = 11,881.96 : x
  2. Step 2: Convert to fraction form
    28,509.48/42,741.12 = 11,881.96/x
  3. Step 3: Cross multiply
    28,509.48x = 42,741.12 × 11,881.96
  4. Step 4: Simplify right side
    28,509.48x = 507,848,278.20
  5. Step 5: Solve for x
    x = 507,848,278.20/28,509.48
  6. Step 6: Final answer
    x = 17,813.31

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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.