Home / 18,303.18-25,258.41-9,919.68

Finding the Fourth Proportional to 18,303.18, 25,258.41 and 9,919.68

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Solution

The fourth proportional to 18,303.18, 25,258.41 and 9,919.68 is: 13,689.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.18 : 25,258.41 = 9,919.68 : x
  2. Step 2: Convert to fraction form
    18,303.18/25,258.41 = 9,919.68/x
  3. Step 3: Cross multiply
    18,303.18x = 25,258.41 × 9,919.68
  4. Step 4: Simplify right side
    18,303.18x = 250,555,344.51
  5. Step 5: Solve for x
    x = 250,555,344.51/18,303.18
  6. Step 6: Final answer
    x = 13,689.17

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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.