Home / 31,702.76-47,554.68-11,990.60

Finding the Fourth Proportional to 31,702.76, 47,554.68 and 11,990.60

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Solution

The fourth proportional to 31,702.76, 47,554.68 and 11,990.60 is: 17,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,702.76 : 47,554.68 = 11,990.60 : x
  2. Step 2: Convert to fraction form
    31,702.76/47,554.68 = 11,990.60/x
  3. Step 3: Cross multiply
    31,702.76x = 47,554.68 × 11,990.60
  4. Step 4: Simplify right side
    31,702.76x = 570,209,146.01
  5. Step 5: Solve for x
    x = 570,209,146.01/31,702.76
  6. Step 6: Final answer
    x = 17,986.10

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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.