Home / 28,470.67-39,289.53-15,895.42

Finding the Fourth Proportional to 28,470.67, 39,289.53 and 15,895.42

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Solution

The fourth proportional to 28,470.67, 39,289.53 and 15,895.42 is: 21,935.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.67 : 39,289.53 = 15,895.42 : x
  2. Step 2: Convert to fraction form
    28,470.67/39,289.53 = 15,895.42/x
  3. Step 3: Cross multiply
    28,470.67x = 39,289.53 × 15,895.42
  4. Step 4: Simplify right side
    28,470.67x = 624,523,580.95
  5. Step 5: Solve for x
    x = 624,523,580.95/28,470.67
  6. Step 6: Final answer
    x = 21,935.68

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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.