Home / 23,990.40-33,106.88-13,919.20

Finding the Fourth Proportional to 23,990.40, 33,106.88 and 13,919.20

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Solution

The fourth proportional to 23,990.40, 33,106.88 and 13,919.20 is: 19,208.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,990.40 : 33,106.88 = 13,919.20 : x
  2. Step 2: Convert to fraction form
    23,990.40/33,106.88 = 13,919.20/x
  3. Step 3: Cross multiply
    23,990.40x = 33,106.88 × 13,919.20
  4. Step 4: Simplify right side
    23,990.40x = 460,821,284.10
  5. Step 5: Solve for x
    x = 460,821,284.10/23,990.40
  6. Step 6: Final answer
    x = 19,208.57

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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.