Home / 28,499.08-39,328.58-15,923.72

Finding the Fourth Proportional to 28,499.08, 39,328.58 and 15,923.72

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Solution

The fourth proportional to 28,499.08, 39,328.58 and 15,923.72 is: 21,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.08 : 39,328.58 = 15,923.72 : x
  2. Step 2: Convert to fraction form
    28,499.08/39,328.58 = 15,923.72/x
  3. Step 3: Cross multiply
    28,499.08x = 39,328.58 × 15,923.72
  4. Step 4: Simplify right side
    28,499.08x = 626,257,295.92
  5. Step 5: Solve for x
    x = 626,257,295.92/28,499.08
  6. Step 6: Final answer
    x = 21,974.65

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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.