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Finding the Fourth Proportional to 31,525.80, 47,288.70 and 15,973.80

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Solution

The fourth proportional to 31,525.80, 47,288.70 and 15,973.80 is: 23,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,525.80 : 47,288.70 = 15,973.80 : x
  2. Step 2: Convert to fraction form
    31,525.80/47,288.70 = 15,973.80/x
  3. Step 3: Cross multiply
    31,525.80x = 47,288.70 × 15,973.80
  4. Step 4: Simplify right side
    31,525.80x = 755,380,236.06
  5. Step 5: Solve for x
    x = 755,380,236.06/31,525.80
  6. Step 6: Final answer
    x = 23,960.70

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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.