Home / 55,943.36-83,889.12-20,857.76

Finding the Fourth Proportional to 55,943.36, 83,889.12 and 20,857.76

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Solution

The fourth proportional to 55,943.36, 83,889.12 and 20,857.76 is: 31,276.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,943.36 : 83,889.12 = 20,857.76 : x
  2. Step 2: Convert to fraction form
    55,943.36/83,889.12 = 20,857.76/x
  3. Step 3: Cross multiply
    55,943.36x = 83,889.12 × 20,857.76
  4. Step 4: Simplify right side
    55,943.36x = 1,749,739,131.57
  5. Step 5: Solve for x
    x = 1,749,739,131.57/55,943.36
  6. Step 6: Final answer
    x = 31,276.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.