Home / 30,361.36-41,886.60-18,420.32

Finding the Fourth Proportional to 30,361.36, 41,886.60 and 18,420.32

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Solution

The fourth proportional to 30,361.36, 41,886.60 and 18,420.32 is: 25,412.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,361.36 : 41,886.60 = 18,420.32 : x
  2. Step 2: Convert to fraction form
    30,361.36/41,886.60 = 18,420.32/x
  3. Step 3: Cross multiply
    30,361.36x = 41,886.60 × 18,420.32
  4. Step 4: Simplify right side
    30,361.36x = 771,564,575.71
  5. Step 5: Solve for x
    x = 771,564,575.71/30,361.36
  6. Step 6: Final answer
    x = 25,412.71

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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.