Home / 21,211.51-29,270.59-11,649.54

Finding the Fourth Proportional to 21,211.51, 29,270.59 and 11,649.54

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Solution

The fourth proportional to 21,211.51, 29,270.59 and 11,649.54 is: 16,075.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.51 : 29,270.59 = 11,649.54 : x
  2. Step 2: Convert to fraction form
    21,211.51/29,270.59 = 11,649.54/x
  3. Step 3: Cross multiply
    21,211.51x = 29,270.59 × 11,649.54
  4. Step 4: Simplify right side
    21,211.51x = 340,988,909.03
  5. Step 5: Solve for x
    x = 340,988,909.03/21,211.51
  6. Step 6: Final answer
    x = 16,075.65

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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.