Home / 18,123.66-25,011.80-10,166.40

Finding the Fourth Proportional to 18,123.66, 25,011.80 and 10,166.40

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Solution

The fourth proportional to 18,123.66, 25,011.80 and 10,166.40 is: 14,030.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.66 : 25,011.80 = 10,166.40 : x
  2. Step 2: Convert to fraction form
    18,123.66/25,011.80 = 10,166.40/x
  3. Step 3: Cross multiply
    18,123.66x = 25,011.80 × 10,166.40
  4. Step 4: Simplify right side
    18,123.66x = 254,279,912.69
  5. Step 5: Solve for x
    x = 254,279,912.69/18,123.66
  6. Step 6: Final answer
    x = 14,030.27

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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.