Home / 27,981.08-38,628.16-21,593.32

Finding the Fourth Proportional to 27,981.08, 38,628.16 and 21,593.32

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Solution

The fourth proportional to 27,981.08, 38,628.16 and 21,593.32 is: 29,809.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981.08 : 38,628.16 = 21,593.32 : x
  2. Step 2: Convert to fraction form
    27,981.08/38,628.16 = 21,593.32/x
  3. Step 3: Cross multiply
    27,981.08x = 38,628.16 × 21,593.32
  4. Step 4: Simplify right side
    27,981.08x = 834,110,219.89
  5. Step 5: Solve for x
    x = 834,110,219.89/27,981.08
  6. Step 6: Final answer
    x = 29,809.79

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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.