Home / 39,163.47-54,045.86-21,258.47

Finding the Fourth Proportional to 39,163.47, 54,045.86 and 21,258.47

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Solution

The fourth proportional to 39,163.47, 54,045.86 and 21,258.47 is: 29,336.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,163.47 : 54,045.86 = 21,258.47 : x
  2. Step 2: Convert to fraction form
    39,163.47/54,045.86 = 21,258.47/x
  3. Step 3: Cross multiply
    39,163.47x = 54,045.86 × 21,258.47
  4. Step 4: Simplify right side
    39,163.47x = 1,148,931,916.91
  5. Step 5: Solve for x
    x = 1,148,931,916.91/39,163.47
  6. Step 6: Final answer
    x = 29,336.83

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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.