Home / 20,702.89-31,068.74-9,010.09

Finding the Fourth Proportional to 20,702.89, 31,068.74 and 9,010.09

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Solution

The fourth proportional to 20,702.89, 31,068.74 and 9,010.09 is: 13,521.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.89 : 31,068.74 = 9,010.09 : x
  2. Step 2: Convert to fraction form
    20,702.89/31,068.74 = 9,010.09/x
  3. Step 3: Cross multiply
    20,702.89x = 31,068.74 × 9,010.09
  4. Step 4: Simplify right side
    20,702.89x = 279,932,098.54
  5. Step 5: Solve for x
    x = 279,932,098.54/20,702.89
  6. Step 6: Final answer
    x = 13,521.40

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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.