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Finding the Fourth Proportional to 35,894.90, 49,534.53 and 20,990.90

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Solution

The fourth proportional to 35,894.90, 49,534.53 and 20,990.90 is: 28,967.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,894.90 : 49,534.53 = 20,990.90 : x
  2. Step 2: Convert to fraction form
    35,894.90/49,534.53 = 20,990.90/x
  3. Step 3: Cross multiply
    35,894.90x = 49,534.53 × 20,990.90
  4. Step 4: Simplify right side
    35,894.90x = 1,039,774,365.78
  5. Step 5: Solve for x
    x = 1,039,774,365.78/35,894.90
  6. Step 6: Final answer
    x = 28,967.19

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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.