Home / 28,326.63-39,090.65-15,751.38

Finding the Fourth Proportional to 28,326.63, 39,090.65 and 15,751.38

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Solution

The fourth proportional to 28,326.63, 39,090.65 and 15,751.38 is: 21,736.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,326.63 : 39,090.65 = 15,751.38 : x
  2. Step 2: Convert to fraction form
    28,326.63/39,090.65 = 15,751.38/x
  3. Step 3: Cross multiply
    28,326.63x = 39,090.65 × 15,751.38
  4. Step 4: Simplify right side
    28,326.63x = 615,731,603.84
  5. Step 5: Solve for x
    x = 615,731,603.84/28,326.63
  6. Step 6: Final answer
    x = 21,736.85

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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.