Home / 28,352.40-39,125.58-15,431.13

Finding the Fourth Proportional to 28,352.40, 39,125.58 and 15,431.13

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Solution

The fourth proportional to 28,352.40, 39,125.58 and 15,431.13 is: 21,294.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.40 : 39,125.58 = 15,431.13 : x
  2. Step 2: Convert to fraction form
    28,352.40/39,125.58 = 15,431.13/x
  3. Step 3: Cross multiply
    28,352.40x = 39,125.58 × 15,431.13
  4. Step 4: Simplify right side
    28,352.40x = 603,751,911.31
  5. Step 5: Solve for x
    x = 603,751,911.31/28,352.40
  6. Step 6: Final answer
    x = 21,294.56

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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.