Home / 18,989.19-26,202.83-11,435.40

Finding the Fourth Proportional to 18,989.19, 26,202.83 and 11,435.40

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Solution

The fourth proportional to 18,989.19, 26,202.83 and 11,435.40 is: 15,779.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.19 : 26,202.83 = 11,435.40 : x
  2. Step 2: Convert to fraction form
    18,989.19/26,202.83 = 11,435.40/x
  3. Step 3: Cross multiply
    18,989.19x = 26,202.83 × 11,435.40
  4. Step 4: Simplify right side
    18,989.19x = 299,639,785.01
  5. Step 5: Solve for x
    x = 299,639,785.01/18,989.19
  6. Step 6: Final answer
    x = 15,779.49

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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.