Home / 10,215.40-14,097.62-5,739.07

Finding the Fourth Proportional to 10,215.40, 14,097.62 and 5,739.07

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Solution

The fourth proportional to 10,215.40, 14,097.62 and 5,739.07 is: 7,920.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.40 : 14,097.62 = 5,739.07 : x
  2. Step 2: Convert to fraction form
    10,215.40/14,097.62 = 5,739.07/x
  3. Step 3: Cross multiply
    10,215.40x = 14,097.62 × 5,739.07
  4. Step 4: Simplify right side
    10,215.40x = 80,907,157.93
  5. Step 5: Solve for x
    x = 80,907,157.93/10,215.40
  6. Step 6: Final answer
    x = 7,920.11

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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.