Home / 10,135.08-13,998.60-7,628.40

Finding the Fourth Proportional to 10,135.08, 13,998.60 and 7,628.40

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Solution

The fourth proportional to 10,135.08, 13,998.60 and 7,628.40 is: 10,536.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,135.08 : 13,998.60 = 7,628.40 : x
  2. Step 2: Convert to fraction form
    10,135.08/13,998.60 = 7,628.40/x
  3. Step 3: Cross multiply
    10,135.08x = 13,998.60 × 7,628.40
  4. Step 4: Simplify right side
    10,135.08x = 106,786,920.24
  5. Step 5: Solve for x
    x = 106,786,920.24/10,135.08
  6. Step 6: Final answer
    x = 10,536.37

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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.