Home / 21,075.26-29,085.63-11,645.51

Finding the Fourth Proportional to 21,075.26, 29,085.63 and 11,645.51

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Solution

The fourth proportional to 21,075.26, 29,085.63 and 11,645.51 is: 16,071.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.26 : 29,085.63 = 11,645.51 : x
  2. Step 2: Convert to fraction form
    21,075.26/29,085.63 = 11,645.51/x
  3. Step 3: Cross multiply
    21,075.26x = 29,085.63 × 11,645.51
  4. Step 4: Simplify right side
    21,075.26x = 338,716,995.02
  5. Step 5: Solve for x
    x = 338,716,995.02/21,075.26
  6. Step 6: Final answer
    x = 16,071.78

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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.