Home / 30,630.06-45,917.34-21,274.50

Finding the Fourth Proportional to 30,630.06, 45,917.34 and 21,274.50

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Solution

The fourth proportional to 30,630.06, 45,917.34 and 21,274.50 is: 31,892.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,630.06 : 45,917.34 = 21,274.50 : x
  2. Step 2: Convert to fraction form
    30,630.06/45,917.34 = 21,274.50/x
  3. Step 3: Cross multiply
    30,630.06x = 45,917.34 × 21,274.50
  4. Step 4: Simplify right side
    30,630.06x = 976,868,449.83
  5. Step 5: Solve for x
    x = 976,868,449.83/30,630.06
  6. Step 6: Final answer
    x = 31,892.48

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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.