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Finding the Fourth Proportional to 35,803.78, 49,407.54 and 19,889.20

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Solution

The fourth proportional to 35,803.78, 49,407.54 and 19,889.20 is: 27,446.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,803.78 : 49,407.54 = 19,889.20 : x
  2. Step 2: Convert to fraction form
    35,803.78/49,407.54 = 19,889.20/x
  3. Step 3: Cross multiply
    35,803.78x = 49,407.54 × 19,889.20
  4. Step 4: Simplify right side
    35,803.78x = 982,676,444.57
  5. Step 5: Solve for x
    x = 982,676,444.57/35,803.78
  6. Step 6: Final answer
    x = 27,446.16

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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.