Home / 14,145.41-21,207.63-7,120.28

Finding the Fourth Proportional to 14,145.41, 21,207.63 and 7,120.28

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Solution

The fourth proportional to 14,145.41, 21,207.63 and 7,120.28 is: 10,675.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.41 : 21,207.63 = 7,120.28 : x
  2. Step 2: Convert to fraction form
    14,145.41/21,207.63 = 7,120.28/x
  3. Step 3: Cross multiply
    14,145.41x = 21,207.63 × 7,120.28
  4. Step 4: Simplify right side
    14,145.41x = 151,004,263.93
  5. Step 5: Solve for x
    x = 151,004,263.93/14,145.41
  6. Step 6: Final answer
    x = 10,675.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.