Home / 30,435.75-42,001.34-18,496.86

Finding the Fourth Proportional to 30,435.75, 42,001.34 and 18,496.86

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Solution

The fourth proportional to 30,435.75, 42,001.34 and 18,496.86 is: 25,525.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,435.75 : 42,001.34 = 18,496.86 : x
  2. Step 2: Convert to fraction form
    30,435.75/42,001.34 = 18,496.86/x
  3. Step 3: Cross multiply
    30,435.75x = 42,001.34 × 18,496.86
  4. Step 4: Simplify right side
    30,435.75x = 776,892,655.80
  5. Step 5: Solve for x
    x = 776,892,655.80/30,435.75
  6. Step 6: Final answer
    x = 25,525.66

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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.