Home / 10,628.88-14,669.28-7,972.08

Finding the Fourth Proportional to 10,628.88, 14,669.28 and 7,972.08

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Solution

The fourth proportional to 10,628.88, 14,669.28 and 7,972.08 is: 11,002.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,628.88 : 14,669.28 = 7,972.08 : x
  2. Step 2: Convert to fraction form
    10,628.88/14,669.28 = 7,972.08/x
  3. Step 3: Cross multiply
    10,628.88x = 14,669.28 × 7,972.08
  4. Step 4: Simplify right side
    10,628.88x = 116,944,673.70
  5. Step 5: Solve for x
    x = 116,944,673.70/10,628.88
  6. Step 6: Final answer
    x = 11,002.54

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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.