Home / 18,702.72-28,038.56-7,614.63

Finding the Fourth Proportional to 18,702.72, 28,038.56 and 7,614.63

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Solution

The fourth proportional to 18,702.72, 28,038.56 and 7,614.63 is: 11,415.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.72 : 28,038.56 = 7,614.63 : x
  2. Step 2: Convert to fraction form
    18,702.72/28,038.56 = 7,614.63/x
  3. Step 3: Cross multiply
    18,702.72x = 28,038.56 × 7,614.63
  4. Step 4: Simplify right side
    18,702.72x = 213,503,222.06
  5. Step 5: Solve for x
    x = 213,503,222.06/18,702.72
  6. Step 6: Final answer
    x = 11,415.62

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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.