Home / 18,345.81-25,316.73-10,388.79

Finding the Fourth Proportional to 18,345.81, 25,316.73 and 10,388.79

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Solution

The fourth proportional to 18,345.81, 25,316.73 and 10,388.79 is: 14,336.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.81 : 25,316.73 = 10,388.79 : x
  2. Step 2: Convert to fraction form
    18,345.81/25,316.73 = 10,388.79/x
  3. Step 3: Cross multiply
    18,345.81x = 25,316.73 × 10,388.79
  4. Step 4: Simplify right side
    18,345.81x = 263,010,191.46
  5. Step 5: Solve for x
    x = 263,010,191.46/18,345.81
  6. Step 6: Final answer
    x = 14,336.25

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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.