Home / 20,848.88-28,771.54-11,417.60

Finding the Fourth Proportional to 20,848.88, 28,771.54 and 11,417.60

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Solution

The fourth proportional to 20,848.88, 28,771.54 and 11,417.60 is: 15,756.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.88 : 28,771.54 = 11,417.60 : x
  2. Step 2: Convert to fraction form
    20,848.88/28,771.54 = 11,417.60/x
  3. Step 3: Cross multiply
    20,848.88x = 28,771.54 × 11,417.60
  4. Step 4: Simplify right side
    20,848.88x = 328,501,762.70
  5. Step 5: Solve for x
    x = 328,501,762.70/20,848.88
  6. Step 6: Final answer
    x = 15,756.33

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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.