Home / 20,347.83-30,515.28-19,019.57

Finding the Fourth Proportional to 20,347.83, 30,515.28 and 19,019.57

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Solution

The fourth proportional to 20,347.83, 30,515.28 and 19,019.57 is: 28,523.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.83 : 30,515.28 = 19,019.57 : x
  2. Step 2: Convert to fraction form
    20,347.83/30,515.28 = 19,019.57/x
  3. Step 3: Cross multiply
    20,347.83x = 30,515.28 × 19,019.57
  4. Step 4: Simplify right side
    20,347.83x = 580,387,574.51
  5. Step 5: Solve for x
    x = 580,387,574.51/20,347.83
  6. Step 6: Final answer
    x = 28,523.32

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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.