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Finding the Fourth Proportional to 27,041.80, 40,530.30 and 13,887.40

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Solution

The fourth proportional to 27,041.80, 40,530.30 and 13,887.40 is: 20,814.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,041.80 : 40,530.30 = 13,887.40 : x
  2. Step 2: Convert to fraction form
    27,041.80/40,530.30 = 13,887.40/x
  3. Step 3: Cross multiply
    27,041.80x = 40,530.30 × 13,887.40
  4. Step 4: Simplify right side
    27,041.80x = 562,860,488.22
  5. Step 5: Solve for x
    x = 562,860,488.22/27,041.80
  6. Step 6: Final answer
    x = 20,814.46

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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.