Home / 11,513.45-15,887.44-6,477.56

Finding the Fourth Proportional to 11,513.45, 15,887.44 and 6,477.56

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Solution

The fourth proportional to 11,513.45, 15,887.44 and 6,477.56 is: 8,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,513.45 : 15,887.44 = 6,477.56 : x
  2. Step 2: Convert to fraction form
    11,513.45/15,887.44 = 6,477.56/x
  3. Step 3: Cross multiply
    11,513.45x = 15,887.44 × 6,477.56
  4. Step 4: Simplify right side
    11,513.45x = 102,911,869.37
  5. Step 5: Solve for x
    x = 102,911,869.37/11,513.45
  6. Step 6: Final answer
    x = 8,938.40

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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.