Home / 21,223.68-31,809.33-8,735.91

Finding the Fourth Proportional to 21,223.68, 31,809.33 and 8,735.91

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Solution

The fourth proportional to 21,223.68, 31,809.33 and 8,735.91 is: 13,093.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.68 : 31,809.33 = 8,735.91 : x
  2. Step 2: Convert to fraction form
    21,223.68/31,809.33 = 8,735.91/x
  3. Step 3: Cross multiply
    21,223.68x = 31,809.33 × 8,735.91
  4. Step 4: Simplify right side
    21,223.68x = 277,883,444.04
  5. Step 5: Solve for x
    x = 277,883,444.04/21,223.68
  6. Step 6: Final answer
    x = 13,093.08

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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.