Home / 38,391.09-52,981.35-21,395.34

Finding the Fourth Proportional to 38,391.09, 52,981.35 and 21,395.34

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Solution

The fourth proportional to 38,391.09, 52,981.35 and 21,395.34 is: 29,526.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,391.09 : 52,981.35 = 21,395.34 : x
  2. Step 2: Convert to fraction form
    38,391.09/52,981.35 = 21,395.34/x
  3. Step 3: Cross multiply
    38,391.09x = 52,981.35 × 21,395.34
  4. Step 4: Simplify right side
    38,391.09x = 1,133,553,996.91
  5. Step 5: Solve for x
    x = 1,133,553,996.91/38,391.09
  6. Step 6: Final answer
    x = 29,526.49

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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.