Home / 21,134.40-31,702.58-11,767.37

Finding the Fourth Proportional to 21,134.40, 31,702.58 and 11,767.37

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Solution

The fourth proportional to 21,134.40, 31,702.58 and 11,767.37 is: 17,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.40 : 31,702.58 = 11,767.37 : x
  2. Step 2: Convert to fraction form
    21,134.40/31,702.58 = 11,767.37/x
  3. Step 3: Cross multiply
    21,134.40x = 31,702.58 × 11,767.37
  4. Step 4: Simplify right side
    21,134.40x = 373,055,988.81
  5. Step 5: Solve for x
    x = 373,055,988.81/21,134.40
  6. Step 6: Final answer
    x = 17,651.60

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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.