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Finding the Fourth Proportional to 35,497.80, 48,989.34 and 20,395.35

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Solution

The fourth proportional to 35,497.80, 48,989.34 and 20,395.35 is: 28,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,497.80 : 48,989.34 = 20,395.35 : x
  2. Step 2: Convert to fraction form
    35,497.80/48,989.34 = 20,395.35/x
  3. Step 3: Cross multiply
    35,497.80x = 48,989.34 × 20,395.35
  4. Step 4: Simplify right side
    35,497.80x = 999,154,735.57
  5. Step 5: Solve for x
    x = 999,154,735.57/35,497.80
  6. Step 6: Final answer
    x = 28,146.95

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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.