Home / 10,129.90-13,977.48-5,653.30

Finding the Fourth Proportional to 10,129.90, 13,977.48 and 5,653.30

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Solution

The fourth proportional to 10,129.90, 13,977.48 and 5,653.30 is: 7,800.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.90 : 13,977.48 = 5,653.30 : x
  2. Step 2: Convert to fraction form
    10,129.90/13,977.48 = 5,653.30/x
  3. Step 3: Cross multiply
    10,129.90x = 13,977.48 × 5,653.30
  4. Step 4: Simplify right side
    10,129.90x = 79,018,887.68
  5. Step 5: Solve for x
    x = 79,018,887.68/10,129.90
  6. Step 6: Final answer
    x = 7,800.56

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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.