Home / 39,689.47-54,762.87-22,912.75

Finding the Fourth Proportional to 39,689.47, 54,762.87 and 22,912.75

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Solution

The fourth proportional to 39,689.47, 54,762.87 and 22,912.75 is: 31,614.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,689.47 : 54,762.87 = 22,912.75 : x
  2. Step 2: Convert to fraction form
    39,689.47/54,762.87 = 22,912.75/x
  3. Step 3: Cross multiply
    39,689.47x = 54,762.87 × 22,912.75
  4. Step 4: Simplify right side
    39,689.47x = 1,254,767,949.59
  5. Step 5: Solve for x
    x = 1,254,767,949.59/39,689.47
  6. Step 6: Final answer
    x = 31,614.63

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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.