Home / 13,371.76-18,455.58-7,710.28

Finding the Fourth Proportional to 13,371.76, 18,455.58 and 7,710.28

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Solution

The fourth proportional to 13,371.76, 18,455.58 and 7,710.28 is: 10,641.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.76 : 18,455.58 = 7,710.28 : x
  2. Step 2: Convert to fraction form
    13,371.76/18,455.58 = 7,710.28/x
  3. Step 3: Cross multiply
    13,371.76x = 18,455.58 × 7,710.28
  4. Step 4: Simplify right side
    13,371.76x = 142,297,689.36
  5. Step 5: Solve for x
    x = 142,297,689.36/13,371.76
  6. Step 6: Final answer
    x = 10,641.66

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1.5x scale

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.