Home / 28,326.08-39,090.08-15,751.68

Finding the Fourth Proportional to 28,326.08, 39,090.08 and 15,751.68

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Solution

The fourth proportional to 28,326.08, 39,090.08 and 15,751.68 is: 21,737.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,326.08 : 39,090.08 = 15,751.68 : x
  2. Step 2: Convert to fraction form
    28,326.08/39,090.08 = 15,751.68/x
  3. Step 3: Cross multiply
    28,326.08x = 39,090.08 × 15,751.68
  4. Step 4: Simplify right side
    28,326.08x = 615,734,431.33
  5. Step 5: Solve for x
    x = 615,734,431.33/28,326.08
  6. Step 6: Final answer
    x = 21,737.37

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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.