Home / 19,619.32-29,431.26-7,145.18

Finding the Fourth Proportional to 19,619.32, 29,431.26 and 7,145.18

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Solution

The fourth proportional to 19,619.32, 29,431.26 and 7,145.18 is: 10,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.32 : 29,431.26 = 7,145.18 : x
  2. Step 2: Convert to fraction form
    19,619.32/29,431.26 = 7,145.18/x
  3. Step 3: Cross multiply
    19,619.32x = 29,431.26 × 7,145.18
  4. Step 4: Simplify right side
    19,619.32x = 210,291,650.33
  5. Step 5: Solve for x
    x = 210,291,650.33/19,619.32
  6. Step 6: Final answer
    x = 10,718.60

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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.