Home / 20,893.21-31,350.58-13,878.07

Finding the Fourth Proportional to 20,893.21, 31,350.58 and 13,878.07

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Solution

The fourth proportional to 20,893.21, 31,350.58 and 13,878.07 is: 20,824.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.21 : 31,350.58 = 13,878.07 : x
  2. Step 2: Convert to fraction form
    20,893.21/31,350.58 = 13,878.07/x
  3. Step 3: Cross multiply
    20,893.21x = 31,350.58 × 13,878.07
  4. Step 4: Simplify right side
    20,893.21x = 435,085,430.71
  5. Step 5: Solve for x
    x = 435,085,430.71/20,893.21
  6. Step 6: Final answer
    x = 20,824.25

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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.