Home / 39,712.85-54,804.20-21,807.48

Finding the Fourth Proportional to 39,712.85, 54,804.20 and 21,807.48

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Solution

The fourth proportional to 39,712.85, 54,804.20 and 21,807.48 is: 30,094.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,712.85 : 54,804.20 = 21,807.48 : x
  2. Step 2: Convert to fraction form
    39,712.85/54,804.20 = 21,807.48/x
  3. Step 3: Cross multiply
    39,712.85x = 54,804.20 × 21,807.48
  4. Step 4: Simplify right side
    39,712.85x = 1,195,141,495.42
  5. Step 5: Solve for x
    x = 1,195,141,495.42/39,712.85
  6. Step 6: Final answer
    x = 30,094.58

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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.