Home / 20,615.94-28,468.98-19,511.10

Finding the Fourth Proportional to 20,615.94, 28,468.98 and 19,511.10

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Solution

The fourth proportional to 20,615.94, 28,468.98 and 19,511.10 is: 26,943.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.94 : 28,468.98 = 19,511.10 : x
  2. Step 2: Convert to fraction form
    20,615.94/28,468.98 = 19,511.10/x
  3. Step 3: Cross multiply
    20,615.94x = 28,468.98 × 19,511.10
  4. Step 4: Simplify right side
    20,615.94x = 555,461,115.68
  5. Step 5: Solve for x
    x = 555,461,115.68/20,615.94
  6. Step 6: Final answer
    x = 26,943.28

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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.