Home / 31,589.57-47,389.49-11,869.72

Finding the Fourth Proportional to 31,589.57, 47,389.49 and 11,869.72

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Solution

The fourth proportional to 31,589.57, 47,389.49 and 11,869.72 is: 17,806.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,589.57 : 47,389.49 = 11,869.72 : x
  2. Step 2: Convert to fraction form
    31,589.57/47,389.49 = 11,869.72/x
  3. Step 3: Cross multiply
    31,589.57x = 47,389.49 × 11,869.72
  4. Step 4: Simplify right side
    31,589.57x = 562,499,977.24
  5. Step 5: Solve for x
    x = 562,499,977.24/31,589.57
  6. Step 6: Final answer
    x = 17,806.51

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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.