Home / 28,555.21-39,418.55-21,483.37

Finding the Fourth Proportional to 28,555.21, 39,418.55 and 21,483.37

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Solution

The fourth proportional to 28,555.21, 39,418.55 and 21,483.37 is: 29,656.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.21 : 39,418.55 = 21,483.37 : x
  2. Step 2: Convert to fraction form
    28,555.21/39,418.55 = 21,483.37/x
  3. Step 3: Cross multiply
    28,555.21x = 39,418.55 × 21,483.37
  4. Step 4: Simplify right side
    28,555.21x = 846,843,187.10
  5. Step 5: Solve for x
    x = 846,843,187.10/28,555.21
  6. Step 6: Final answer
    x = 29,656.35

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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.