Home / 20,937.85-28,893.63-11,985.06

Finding the Fourth Proportional to 20,937.85, 28,893.63 and 11,985.06

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Solution

The fourth proportional to 20,937.85, 28,893.63 and 11,985.06 is: 16,539.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.85 : 28,893.63 = 11,985.06 : x
  2. Step 2: Convert to fraction form
    20,937.85/28,893.63 = 11,985.06/x
  3. Step 3: Cross multiply
    20,937.85x = 28,893.63 × 11,985.06
  4. Step 4: Simplify right side
    20,937.85x = 346,291,889.17
  5. Step 5: Solve for x
    x = 346,291,889.17/20,937.85
  6. Step 6: Final answer
    x = 16,539.04

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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.