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Finding the Fourth Proportional to 18,189.93, 25,101.93 and 10,123.45

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Solution

The fourth proportional to 18,189.93, 25,101.93 and 10,123.45 is: 13,970.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.93 : 25,101.93 = 10,123.45 : x
  2. Step 2: Convert to fraction form
    18,189.93/25,101.93 = 10,123.45/x
  3. Step 3: Cross multiply
    18,189.93x = 25,101.93 × 10,123.45
  4. Step 4: Simplify right side
    18,189.93x = 254,118,133.26
  5. Step 5: Solve for x
    x = 254,118,133.26/18,189.93
  6. Step 6: Final answer
    x = 13,970.26

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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.