Home / 15,299.10-21,104.95-9,997.02

Finding the Fourth Proportional to 15,299.10, 21,104.95 and 9,997.02

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Solution

The fourth proportional to 15,299.10, 21,104.95 and 9,997.02 is: 13,790.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.10 : 21,104.95 = 9,997.02 : x
  2. Step 2: Convert to fraction form
    15,299.10/21,104.95 = 9,997.02/x
  3. Step 3: Cross multiply
    15,299.10x = 21,104.95 × 9,997.02
  4. Step 4: Simplify right side
    15,299.10x = 210,986,607.25
  5. Step 5: Solve for x
    x = 210,986,607.25/15,299.10
  6. Step 6: Final answer
    x = 13,790.79

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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.