Home / 28,435.51-39,241.14-15,688.84

Finding the Fourth Proportional to 28,435.51, 39,241.14 and 15,688.84

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Solution

The fourth proportional to 28,435.51, 39,241.14 and 15,688.84 is: 21,650.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435.51 : 39,241.14 = 15,688.84 : x
  2. Step 2: Convert to fraction form
    28,435.51/39,241.14 = 15,688.84/x
  3. Step 3: Cross multiply
    28,435.51x = 39,241.14 × 15,688.84
  4. Step 4: Simplify right side
    28,435.51x = 615,647,966.88
  5. Step 5: Solve for x
    x = 615,647,966.88/28,435.51
  6. Step 6: Final answer
    x = 21,650.67

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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.