Home / 18,749.10-28,128.51-9,388.74

Finding the Fourth Proportional to 18,749.10, 28,128.51 and 9,388.74

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Solution

The fourth proportional to 18,749.10, 28,128.51 and 9,388.74 is: 14,085.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.10 : 28,128.51 = 9,388.74 : x
  2. Step 2: Convert to fraction form
    18,749.10/28,128.51 = 9,388.74/x
  3. Step 3: Cross multiply
    18,749.10x = 28,128.51 × 9,388.74
  4. Step 4: Simplify right side
    18,749.10x = 264,091,266.98
  5. Step 5: Solve for x
    x = 264,091,266.98/18,749.10
  6. Step 6: Final answer
    x = 14,085.54

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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.