Home / 18,378.81-25,317.74-13,328.19

Finding the Fourth Proportional to 18,378.81, 25,317.74 and 13,328.19

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Solution

The fourth proportional to 18,378.81, 25,317.74 and 13,328.19 is: 18,360.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.81 : 25,317.74 = 13,328.19 : x
  2. Step 2: Convert to fraction form
    18,378.81/25,317.74 = 13,328.19/x
  3. Step 3: Cross multiply
    18,378.81x = 25,317.74 × 13,328.19
  4. Step 4: Simplify right side
    18,378.81x = 337,439,582.45
  5. Step 5: Solve for x
    x = 337,439,582.45/18,378.81
  6. Step 6: Final answer
    x = 18,360.25

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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.