Home / 11,878.10-16,389.21-7,572.83

Finding the Fourth Proportional to 11,878.10, 16,389.21 and 7,572.83

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Solution

The fourth proportional to 11,878.10, 16,389.21 and 7,572.83 is: 10,448.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.10 : 16,389.21 = 7,572.83 : x
  2. Step 2: Convert to fraction form
    11,878.10/16,389.21 = 7,572.83/x
  3. Step 3: Cross multiply
    11,878.10x = 16,389.21 × 7,572.83
  4. Step 4: Simplify right side
    11,878.10x = 124,112,651.11
  5. Step 5: Solve for x
    x = 124,112,651.11/11,878.10
  6. Step 6: Final answer
    x = 10,448.87

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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.