Home / 29,307.09-40,443.87-15,878.28

Finding the Fourth Proportional to 29,307.09, 40,443.87 and 15,878.28

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Solution

The fourth proportional to 29,307.09, 40,443.87 and 15,878.28 is: 21,912.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,307.09 : 40,443.87 = 15,878.28 : x
  2. Step 2: Convert to fraction form
    29,307.09/40,443.87 = 15,878.28/x
  3. Step 3: Cross multiply
    29,307.09x = 40,443.87 × 15,878.28
  4. Step 4: Simplify right side
    29,307.09x = 642,179,092.14
  5. Step 5: Solve for x
    x = 642,179,092.14/29,307.09
  6. Step 6: Final answer
    x = 21,912.07

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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.