Home / 20,928.52-31,355.43-11,045.71

Finding the Fourth Proportional to 20,928.52, 31,355.43 and 11,045.71

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Solution

The fourth proportional to 20,928.52, 31,355.43 and 11,045.71 is: 16,548.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.52 : 31,355.43 = 11,045.71 : x
  2. Step 2: Convert to fraction form
    20,928.52/31,355.43 = 11,045.71/x
  3. Step 3: Cross multiply
    20,928.52x = 31,355.43 × 11,045.71
  4. Step 4: Simplify right side
    20,928.52x = 346,342,986.71
  5. Step 5: Solve for x
    x = 346,342,986.71/20,928.52
  6. Step 6: Final answer
    x = 16,548.85

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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.