Home / 21,285.52-31,928.26-5,702.72

Finding the Fourth Proportional to 21,285.52, 31,928.26 and 5,702.72

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Solution

The fourth proportional to 21,285.52, 31,928.26 and 5,702.72 is: 8,554.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.52 : 31,928.26 = 5,702.72 : x
  2. Step 2: Convert to fraction form
    21,285.52/31,928.26 = 5,702.72/x
  3. Step 3: Cross multiply
    21,285.52x = 31,928.26 × 5,702.72
  4. Step 4: Simplify right side
    21,285.52x = 182,077,926.87
  5. Step 5: Solve for x
    x = 182,077,926.87/21,285.52
  6. Step 6: Final answer
    x = 8,554.07

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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.