Home / 28,512.24-42,739.65-11,881.47

Finding the Fourth Proportional to 28,512.24, 42,739.65 and 11,881.47

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Solution

The fourth proportional to 28,512.24, 42,739.65 and 11,881.47 is: 17,810.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.24 : 42,739.65 = 11,881.47 : x
  2. Step 2: Convert to fraction form
    28,512.24/42,739.65 = 11,881.47/x
  3. Step 3: Cross multiply
    28,512.24x = 42,739.65 × 11,881.47
  4. Step 4: Simplify right side
    28,512.24x = 507,809,869.29
  5. Step 5: Solve for x
    x = 507,809,869.29/28,512.24
  6. Step 6: Final answer
    x = 17,810.24

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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.