Home / 28,435.32-39,241.26-15,858.72

Finding the Fourth Proportional to 28,435.32, 39,241.26 and 15,858.72

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Solution

The fourth proportional to 28,435.32, 39,241.26 and 15,858.72 is: 21,885.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435.32 : 39,241.26 = 15,858.72 : x
  2. Step 2: Convert to fraction form
    28,435.32/39,241.26 = 15,858.72/x
  3. Step 3: Cross multiply
    28,435.32x = 39,241.26 × 15,858.72
  4. Step 4: Simplify right side
    28,435.32x = 622,316,154.79
  5. Step 5: Solve for x
    x = 622,316,154.79/28,435.32
  6. Step 6: Final answer
    x = 21,885.32

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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.