Home / 16,905.19-23,321.30-10,938.78

Finding the Fourth Proportional to 16,905.19, 23,321.30 and 10,938.78

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Solution

The fourth proportional to 16,905.19, 23,321.30 and 10,938.78 is: 15,090.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,905.19 : 23,321.30 = 10,938.78 : x
  2. Step 2: Convert to fraction form
    16,905.19/23,321.30 = 10,938.78/x
  3. Step 3: Cross multiply
    16,905.19x = 23,321.30 × 10,938.78
  4. Step 4: Simplify right side
    16,905.19x = 255,106,515.32
  5. Step 5: Solve for x
    x = 255,106,515.32/16,905.19
  6. Step 6: Final answer
    x = 15,090.43

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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.