Home / 18,145.32-25,040.64-10,187.40

Finding the Fourth Proportional to 18,145.32, 25,040.64 and 10,187.40

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Solution

The fourth proportional to 18,145.32, 25,040.64 and 10,187.40 is: 14,058.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.32 : 25,040.64 = 10,187.40 : x
  2. Step 2: Convert to fraction form
    18,145.32/25,040.64 = 10,187.40/x
  3. Step 3: Cross multiply
    18,145.32x = 25,040.64 × 10,187.40
  4. Step 4: Simplify right side
    18,145.32x = 255,099,015.94
  5. Step 5: Solve for x
    x = 255,099,015.94/18,145.32
  6. Step 6: Final answer
    x = 14,058.67

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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.