Home / 28,352.81-39,125.35-15,776.75

Finding the Fourth Proportional to 28,352.81, 39,125.35 and 15,776.75

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Solution

The fourth proportional to 28,352.81, 39,125.35 and 15,776.75 is: 21,771.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.81 : 39,125.35 = 15,776.75 : x
  2. Step 2: Convert to fraction form
    28,352.81/39,125.35 = 15,776.75/x
  3. Step 3: Cross multiply
    28,352.81x = 39,125.35 × 15,776.75
  4. Step 4: Simplify right side
    28,352.81x = 617,270,865.61
  5. Step 5: Solve for x
    x = 617,270,865.61/28,352.81
  6. Step 6: Final answer
    x = 21,771.06

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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.