Home / 14,145.15-21,207.60-7,120.16

Finding the Fourth Proportional to 14,145.15, 21,207.60 and 7,120.16

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Solution

The fourth proportional to 14,145.15, 21,207.60 and 7,120.16 is: 10,675.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.15 : 21,207.60 = 7,120.16 : x
  2. Step 2: Convert to fraction form
    14,145.15/21,207.60 = 7,120.16/x
  3. Step 3: Cross multiply
    14,145.15x = 21,207.60 × 7,120.16
  4. Step 4: Simplify right side
    14,145.15x = 151,001,505.22
  5. Step 5: Solve for x
    x = 151,001,505.22/14,145.15
  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.