Home / 13,777.24-19,013.76-7,810

Finding the Fourth Proportional to 13,777.24, 19,013.76 and 7,810

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Solution

The fourth proportional to 13,777.24, 19,013.76 and 7,810 is: 10,778.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.24 : 19,013.76 = 7,810 : x
  2. Step 2: Convert to fraction form
    13,777.24/19,013.76 = 7,810/x
  3. Step 3: Cross multiply
    13,777.24x = 19,013.76 × 7,810
  4. Step 4: Simplify right side
    13,777.24x = 148,497,465.60
  5. Step 5: Solve for x
    x = 148,497,465.60/13,777.24
  6. Step 6: Final answer
    x = 10,778.46

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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.