Home / 20,890.98-31,339.40-6,100.99

Finding the Fourth Proportional to 20,890.98, 31,339.40 and 6,100.99

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Solution

The fourth proportional to 20,890.98, 31,339.40 and 6,100.99 is: 9,152.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890.98 : 31,339.40 = 6,100.99 : x
  2. Step 2: Convert to fraction form
    20,890.98/31,339.40 = 6,100.99/x
  3. Step 3: Cross multiply
    20,890.98x = 31,339.40 × 6,100.99
  4. Step 4: Simplify right side
    20,890.98x = 191,201,366.01
  5. Step 5: Solve for x
    x = 191,201,366.01/20,890.98
  6. Step 6: Final answer
    x = 9,152.34

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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.