Home / 20,844.09-28,767.62-12,345.53

Finding the Fourth Proportional to 20,844.09, 28,767.62 and 12,345.53

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Solution

The fourth proportional to 20,844.09, 28,767.62 and 12,345.53 is: 17,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.09 : 28,767.62 = 12,345.53 : x
  2. Step 2: Convert to fraction form
    20,844.09/28,767.62 = 12,345.53/x
  3. Step 3: Cross multiply
    20,844.09x = 28,767.62 × 12,345.53
  4. Step 4: Simplify right side
    20,844.09x = 355,151,402.76
  5. Step 5: Solve for x
    x = 355,151,402.76/20,844.09
  6. Step 6: Final answer
    x = 17,038.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.