Home / 21,010.07-31,515.08-9,759.26

Finding the Fourth Proportional to 21,010.07, 31,515.08 and 9,759.26

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Solution

The fourth proportional to 21,010.07, 31,515.08 and 9,759.26 is: 14,638.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.07 : 31,515.08 = 9,759.26 : x
  2. Step 2: Convert to fraction form
    21,010.07/31,515.08 = 9,759.26/x
  3. Step 3: Cross multiply
    21,010.07x = 31,515.08 × 9,759.26
  4. Step 4: Simplify right side
    21,010.07x = 307,563,810.84
  5. Step 5: Solve for x
    x = 307,563,810.84/21,010.07
  6. Step 6: Final answer
    x = 14,638.88

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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.