Home / 28,379.79-38,880.51-27,315.68

Finding the Fourth Proportional to 28,379.79, 38,880.51 and 27,315.68

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Solution

The fourth proportional to 28,379.79, 38,880.51 and 27,315.68 is: 37,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.79 : 38,880.51 = 27,315.68 : x
  2. Step 2: Convert to fraction form
    28,379.79/38,880.51 = 27,315.68/x
  3. Step 3: Cross multiply
    28,379.79x = 38,880.51 × 27,315.68
  4. Step 4: Simplify right side
    28,379.79x = 1,062,047,491.26
  5. Step 5: Solve for x
    x = 1,062,047,491.26/28,379.79
  6. Step 6: Final answer
    x = 37,422.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.