Home / 39,031.41-53,863.63-21,803.79

Finding the Fourth Proportional to 39,031.41, 53,863.63 and 21,803.79

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Solution

The fourth proportional to 39,031.41, 53,863.63 and 21,803.79 is: 30,089.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,031.41 : 53,863.63 = 21,803.79 : x
  2. Step 2: Convert to fraction form
    39,031.41/53,863.63 = 21,803.79/x
  3. Step 3: Cross multiply
    39,031.41x = 53,863.63 × 21,803.79
  4. Step 4: Simplify right side
    39,031.41x = 1,174,431,418.11
  5. Step 5: Solve for x
    x = 1,174,431,418.11/39,031.41
  6. Step 6: Final answer
    x = 30,089.39

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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.