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Finding the Fourth Proportional to 29,368.84, 40,529.04 and 15,940.09

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Solution

The fourth proportional to 29,368.84, 40,529.04 and 15,940.09 is: 21,997.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,368.84 : 40,529.04 = 15,940.09 : x
  2. Step 2: Convert to fraction form
    29,368.84/40,529.04 = 15,940.09/x
  3. Step 3: Cross multiply
    29,368.84x = 40,529.04 × 15,940.09
  4. Step 4: Simplify right side
    29,368.84x = 646,036,465.51
  5. Step 5: Solve for x
    x = 646,036,465.51/29,368.84
  6. Step 6: Final answer
    x = 21,997.34

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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.