Home / 28,670.46-39,564.72-15,923.70

Finding the Fourth Proportional to 28,670.46, 39,564.72 and 15,923.70

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Solution

The fourth proportional to 28,670.46, 39,564.72 and 15,923.70 is: 21,974.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,670.46 : 39,564.72 = 15,923.70 : x
  2. Step 2: Convert to fraction form
    28,670.46/39,564.72 = 15,923.70/x
  3. Step 3: Cross multiply
    28,670.46x = 39,564.72 × 15,923.70
  4. Step 4: Simplify right side
    28,670.46x = 630,016,731.86
  5. Step 5: Solve for x
    x = 630,016,731.86/28,670.46
  6. Step 6: Final answer
    x = 21,974.42

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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.