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Finding the Fourth Proportional to 35,303.96, 48,710.16 and 20,960

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Solution

The fourth proportional to 35,303.96, 48,710.16 and 20,960 is: 28,919.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,303.96 : 48,710.16 = 20,960 : x
  2. Step 2: Convert to fraction form
    35,303.96/48,710.16 = 20,960/x
  3. Step 3: Cross multiply
    35,303.96x = 48,710.16 × 20,960
  4. Step 4: Simplify right side
    35,303.96x = 1,020,964,953.60
  5. Step 5: Solve for x
    x = 1,020,964,953.60/35,303.96
  6. Step 6: Final answer
    x = 28,919.28

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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.