Home / 31,512.02-47,271.49-12,789.34

Finding the Fourth Proportional to 31,512.02, 47,271.49 and 12,789.34

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Solution

The fourth proportional to 31,512.02, 47,271.49 and 12,789.34 is: 19,185.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,512.02 : 47,271.49 = 12,789.34 : x
  2. Step 2: Convert to fraction form
    31,512.02/47,271.49 = 12,789.34/x
  3. Step 3: Cross multiply
    31,512.02x = 47,271.49 × 12,789.34
  4. Step 4: Simplify right side
    31,512.02x = 604,571,037.47
  5. Step 5: Solve for x
    x = 604,571,037.47/31,512.02
  6. Step 6: Final answer
    x = 19,185.41

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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.