Home / 19,325.76-28,990.56-5,286.63

Finding the Fourth Proportional to 19,325.76, 28,990.56 and 5,286.63

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Solution

The fourth proportional to 19,325.76, 28,990.56 and 5,286.63 is: 7,930.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325.76 : 28,990.56 = 5,286.63 : x
  2. Step 2: Convert to fraction form
    19,325.76/28,990.56 = 5,286.63/x
  3. Step 3: Cross multiply
    19,325.76x = 28,990.56 × 5,286.63
  4. Step 4: Simplify right side
    19,325.76x = 153,262,364.21
  5. Step 5: Solve for x
    x = 153,262,364.21/19,325.76
  6. Step 6: Final answer
    x = 7,930.47

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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.