Home / 31,889.16-47,826.72-12,160.80

Finding the Fourth Proportional to 31,889.16, 47,826.72 and 12,160.80

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Solution

The fourth proportional to 31,889.16, 47,826.72 and 12,160.80 is: 18,238.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,889.16 : 47,826.72 = 12,160.80 : x
  2. Step 2: Convert to fraction form
    31,889.16/47,826.72 = 12,160.80/x
  3. Step 3: Cross multiply
    31,889.16x = 47,826.72 × 12,160.80
  4. Step 4: Simplify right side
    31,889.16x = 581,611,176.58
  5. Step 5: Solve for x
    x = 581,611,176.58/31,889.16
  6. Step 6: Final answer
    x = 18,238.52

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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.