Home / 18,429.40-25,433.10-11,260.50

Finding the Fourth Proportional to 18,429.40, 25,433.10 and 11,260.50

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Solution

The fourth proportional to 18,429.40, 25,433.10 and 11,260.50 is: 15,539.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.40 : 25,433.10 = 11,260.50 : x
  2. Step 2: Convert to fraction form
    18,429.40/25,433.10 = 11,260.50/x
  3. Step 3: Cross multiply
    18,429.40x = 25,433.10 × 11,260.50
  4. Step 4: Simplify right side
    18,429.40x = 286,389,422.55
  5. Step 5: Solve for x
    x = 286,389,422.55/18,429.40
  6. Step 6: Final answer
    x = 15,539.81

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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.