Home / 30,489.90-45,734.85-20,026.05

Finding the Fourth Proportional to 30,489.90, 45,734.85 and 20,026.05

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Solution

The fourth proportional to 30,489.90, 45,734.85 and 20,026.05 is: 30,039.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,489.90 : 45,734.85 = 20,026.05 : x
  2. Step 2: Convert to fraction form
    30,489.90/45,734.85 = 20,026.05/x
  3. Step 3: Cross multiply
    30,489.90x = 45,734.85 × 20,026.05
  4. Step 4: Simplify right side
    30,489.90x = 915,888,392.84
  5. Step 5: Solve for x
    x = 915,888,392.84/30,489.90
  6. Step 6: Final answer
    x = 30,039.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.