Home / 38,664-53,356.32-21,900.24

Finding the Fourth Proportional to 38,664, 53,356.32 and 21,900.24

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Solution

The fourth proportional to 38,664, 53,356.32 and 21,900.24 is: 30,222.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,664 : 53,356.32 = 21,900.24 : x
  2. Step 2: Convert to fraction form
    38,664/53,356.32 = 21,900.24/x
  3. Step 3: Cross multiply
    38,664x = 53,356.32 × 21,900.24
  4. Step 4: Simplify right side
    38,664x = 1,168,516,213.52
  5. Step 5: Solve for x
    x = 1,168,516,213.52/38,664
  6. Step 6: Final answer
    x = 30,222.33

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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.