Home / 21,775.22-30,052.32-12,345.50

Finding the Fourth Proportional to 21,775.22, 30,052.32 and 12,345.50

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Solution

The fourth proportional to 21,775.22, 30,052.32 and 12,345.50 is: 17,038.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.22 : 30,052.32 = 12,345.50 : x
  2. Step 2: Convert to fraction form
    21,775.22/30,052.32 = 12,345.50/x
  3. Step 3: Cross multiply
    21,775.22x = 30,052.32 × 12,345.50
  4. Step 4: Simplify right side
    21,775.22x = 371,010,916.56
  5. Step 5: Solve for x
    x = 371,010,916.56/21,775.22
  6. Step 6: Final answer
    x = 17,038.22

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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.