Home / 38,622.72-53,288.64-21,855.36

Finding the Fourth Proportional to 38,622.72, 53,288.64 and 21,855.36

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Solution

The fourth proportional to 38,622.72, 53,288.64 and 21,855.36 is: 30,154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,622.72 : 53,288.64 = 21,855.36 : x
  2. Step 2: Convert to fraction form
    38,622.72/53,288.64 = 21,855.36/x
  3. Step 3: Cross multiply
    38,622.72x = 53,288.64 × 21,855.36
  4. Step 4: Simplify right side
    38,622.72x = 1,164,642,411.11
  5. Step 5: Solve for x
    x = 1,164,642,411.11/38,622.72
  6. Step 6: Final answer
    x = 30,154.33

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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.