Home / 10,130.78-13,977.20-5,653.82

Finding the Fourth Proportional to 10,130.78, 13,977.20 and 5,653.82

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Solution

The fourth proportional to 10,130.78, 13,977.20 and 5,653.82 is: 7,800.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.78 : 13,977.20 = 5,653.82 : x
  2. Step 2: Convert to fraction form
    10,130.78/13,977.20 = 5,653.82/x
  3. Step 3: Cross multiply
    10,130.78x = 13,977.20 × 5,653.82
  4. Step 4: Simplify right side
    10,130.78x = 79,024,572.90
  5. Step 5: Solve for x
    x = 79,024,572.90/10,130.78
  6. Step 6: Final answer
    x = 7,800.44

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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.