Home / 30,945.55-42,705.54-18,846.61

Finding the Fourth Proportional to 30,945.55, 42,705.54 and 18,846.61

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Solution

The fourth proportional to 30,945.55, 42,705.54 and 18,846.61 is: 26,008.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,945.55 : 42,705.54 = 18,846.61 : x
  2. Step 2: Convert to fraction form
    30,945.55/42,705.54 = 18,846.61/x
  3. Step 3: Cross multiply
    30,945.55x = 42,705.54 × 18,846.61
  4. Step 4: Simplify right side
    30,945.55x = 804,854,490.81
  5. Step 5: Solve for x
    x = 804,854,490.81/30,945.55
  6. Step 6: Final answer
    x = 26,008.73

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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.