Home / 28,325.69-39,090.36-15,750.44

Finding the Fourth Proportional to 28,325.69, 39,090.36 and 15,750.44

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Solution

The fourth proportional to 28,325.69, 39,090.36 and 15,750.44 is: 21,736.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,325.69 : 39,090.36 = 15,750.44 : x
  2. Step 2: Convert to fraction form
    28,325.69/39,090.36 = 15,750.44/x
  3. Step 3: Cross multiply
    28,325.69x = 39,090.36 × 15,750.44
  4. Step 4: Simplify right side
    28,325.69x = 615,690,369.76
  5. Step 5: Solve for x
    x = 615,690,369.76/28,325.69
  6. Step 6: Final answer
    x = 21,736.11

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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.