Home / 15,485.04-21,374.28-9,896.04

Finding the Fourth Proportional to 15,485.04, 21,374.28 and 9,896.04

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Solution

The fourth proportional to 15,485.04, 21,374.28 and 9,896.04 is: 13,659.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.04 : 21,374.28 = 9,896.04 : x
  2. Step 2: Convert to fraction form
    15,485.04/21,374.28 = 9,896.04/x
  3. Step 3: Cross multiply
    15,485.04x = 21,374.28 × 9,896.04
  4. Step 4: Simplify right side
    15,485.04x = 211,520,729.85
  5. Step 5: Solve for x
    x = 211,520,729.85/15,485.04
  6. Step 6: Final answer
    x = 13,659.68

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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.