Home / 28,464.48-39,281.76-15,890.04

Finding the Fourth Proportional to 28,464.48, 39,281.76 and 15,890.04

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Solution

The fourth proportional to 28,464.48, 39,281.76 and 15,890.04 is: 21,928.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.48 : 39,281.76 = 15,890.04 : x
  2. Step 2: Convert to fraction form
    28,464.48/39,281.76 = 15,890.04/x
  3. Step 3: Cross multiply
    28,464.48x = 39,281.76 × 15,890.04
  4. Step 4: Simplify right side
    28,464.48x = 624,188,737.67
  5. Step 5: Solve for x
    x = 624,188,737.67/28,464.48
  6. Step 6: Final answer
    x = 21,928.69

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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.