Home / 28,519.43-42,741.78-13,698.86

Finding the Fourth Proportional to 28,519.43, 42,741.78 and 13,698.86

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Solution

The fourth proportional to 28,519.43, 42,741.78 and 13,698.86 is: 20,530.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.43 : 42,741.78 = 13,698.86 : x
  2. Step 2: Convert to fraction form
    28,519.43/42,741.78 = 13,698.86/x
  3. Step 3: Cross multiply
    28,519.43x = 42,741.78 × 13,698.86
  4. Step 4: Simplify right side
    28,519.43x = 585,513,395.29
  5. Step 5: Solve for x
    x = 585,513,395.29/28,519.43
  6. Step 6: Final answer
    x = 20,530.34

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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.