Home / 30,623.18-42,249.07-19,293.70

Finding the Fourth Proportional to 30,623.18, 42,249.07 and 19,293.70

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Solution

The fourth proportional to 30,623.18, 42,249.07 and 19,293.70 is: 26,618.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,623.18 : 42,249.07 = 19,293.70 : x
  2. Step 2: Convert to fraction form
    30,623.18/42,249.07 = 19,293.70/x
  3. Step 3: Cross multiply
    30,623.18x = 42,249.07 × 19,293.70
  4. Step 4: Simplify right side
    30,623.18x = 815,140,881.86
  5. Step 5: Solve for x
    x = 815,140,881.86/30,623.18
  6. Step 6: Final answer
    x = 26,618.43

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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.