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Finding the Fourth Proportional to 35,303.68, 48,741.92 and 21,889.20

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Solution

The fourth proportional to 35,303.68, 48,741.92 and 21,889.20 is: 30,221.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,303.68 : 48,741.92 = 21,889.20 : x
  2. Step 2: Convert to fraction form
    35,303.68/48,741.92 = 21,889.20/x
  3. Step 3: Cross multiply
    35,303.68x = 48,741.92 × 21,889.20
  4. Step 4: Simplify right side
    35,303.68x = 1,066,921,635.26
  5. Step 5: Solve for x
    x = 1,066,921,635.26/35,303.68
  6. Step 6: Final answer
    x = 30,221.26

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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.