Home / 13,977.84-20,953.80-7,398.48

Finding the Fourth Proportional to 13,977.84, 20,953.80 and 7,398.48

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Solution

The fourth proportional to 13,977.84, 20,953.80 and 7,398.48 is: 11,090.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.84 : 20,953.80 = 7,398.48 : x
  2. Step 2: Convert to fraction form
    13,977.84/20,953.80 = 7,398.48/x
  3. Step 3: Cross multiply
    13,977.84x = 20,953.80 × 7,398.48
  4. Step 4: Simplify right side
    13,977.84x = 155,026,270.22
  5. Step 5: Solve for x
    x = 155,026,270.22/13,977.84
  6. Step 6: Final answer
    x = 11,090.86

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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.