Home / 31,729.80-47,594.70-21,880.20

Finding the Fourth Proportional to 31,729.80, 47,594.70 and 21,880.20

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Solution

The fourth proportional to 31,729.80, 47,594.70 and 21,880.20 is: 32,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,729.80 : 47,594.70 = 21,880.20 : x
  2. Step 2: Convert to fraction form
    31,729.80/47,594.70 = 21,880.20/x
  3. Step 3: Cross multiply
    31,729.80x = 47,594.70 × 21,880.20
  4. Step 4: Simplify right side
    31,729.80x = 1,041,381,554.94
  5. Step 5: Solve for x
    x = 1,041,381,554.94/31,729.80
  6. Step 6: Final answer
    x = 32,820.30

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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.