Home / 17,865.12-24,651.75-9,905.40

Finding the Fourth Proportional to 17,865.12, 24,651.75 and 9,905.40

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Solution

The fourth proportional to 17,865.12, 24,651.75 and 9,905.40 is: 13,668.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,865.12 : 24,651.75 = 9,905.40 : x
  2. Step 2: Convert to fraction form
    17,865.12/24,651.75 = 9,905.40/x
  3. Step 3: Cross multiply
    17,865.12x = 24,651.75 × 9,905.40
  4. Step 4: Simplify right side
    17,865.12x = 244,185,444.45
  5. Step 5: Solve for x
    x = 244,185,444.45/17,865.12
  6. Step 6: Final answer
    x = 13,668.28

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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.