Home / 18,670.69-25,765.47-10,172.79

Finding the Fourth Proportional to 18,670.69, 25,765.47 and 10,172.79

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Solution

The fourth proportional to 18,670.69, 25,765.47 and 10,172.79 is: 14,038.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.69 : 25,765.47 = 10,172.79 : x
  2. Step 2: Convert to fraction form
    18,670.69/25,765.47 = 10,172.79/x
  3. Step 3: Cross multiply
    18,670.69x = 25,765.47 × 10,172.79
  4. Step 4: Simplify right side
    18,670.69x = 262,106,715.56
  5. Step 5: Solve for x
    x = 262,106,715.56/18,670.69
  6. Step 6: Final answer
    x = 14,038.41

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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.