Home / 30,765.99-42,457.26-18,026.70

Finding the Fourth Proportional to 30,765.99, 42,457.26 and 18,026.70

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Solution

The fourth proportional to 30,765.99, 42,457.26 and 18,026.70 is: 24,876.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.99 : 42,457.26 = 18,026.70 : x
  2. Step 2: Convert to fraction form
    30,765.99/42,457.26 = 18,026.70/x
  3. Step 3: Cross multiply
    30,765.99x = 42,457.26 × 18,026.70
  4. Step 4: Simplify right side
    30,765.99x = 765,364,288.84
  5. Step 5: Solve for x
    x = 765,364,288.84/30,765.99
  6. Step 6: Final answer
    x = 24,876.96

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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.