Home / 31,907.45-47,868.12-12,191.64

Finding the Fourth Proportional to 31,907.45, 47,868.12 and 12,191.64

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Solution

The fourth proportional to 31,907.45, 47,868.12 and 12,191.64 is: 18,290.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,907.45 : 47,868.12 = 12,191.64 : x
  2. Step 2: Convert to fraction form
    31,907.45/47,868.12 = 12,191.64/x
  3. Step 3: Cross multiply
    31,907.45x = 47,868.12 × 12,191.64
  4. Step 4: Simplify right side
    31,907.45x = 583,590,886.52
  5. Step 5: Solve for x
    x = 583,590,886.52/31,907.45
  6. Step 6: Final answer
    x = 18,290.12

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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.