Home / 15,678.38-23,518.29-3,991.70

Finding the Fourth Proportional to 15,678.38, 23,518.29 and 3,991.70

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Solution

The fourth proportional to 15,678.38, 23,518.29 and 3,991.70 is: 5,987.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.38 : 23,518.29 = 3,991.70 : x
  2. Step 2: Convert to fraction form
    15,678.38/23,518.29 = 3,991.70/x
  3. Step 3: Cross multiply
    15,678.38x = 23,518.29 × 3,991.70
  4. Step 4: Simplify right side
    15,678.38x = 93,877,958.19
  5. Step 5: Solve for x
    x = 93,877,958.19/15,678.38
  6. Step 6: Final answer
    x = 5,987.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.