Home / 30,307.00-41,782.88-21,220.13

Finding the Fourth Proportional to 30,307.00, 41,782.88 and 21,220.13

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Solution

The fourth proportional to 30,307.00, 41,782.88 and 21,220.13 is: 29,255.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,307.00 : 41,782.88 = 21,220.13 : x
  2. Step 2: Convert to fraction form
    30,307.00/41,782.88 = 21,220.13/x
  3. Step 3: Cross multiply
    30,307.00x = 41,782.88 × 21,220.13
  4. Step 4: Simplify right side
    30,307.00x = 886,638,381.22
  5. Step 5: Solve for x
    x = 886,638,381.22/30,307.00
  6. Step 6: Final answer
    x = 29,255.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.