Home / 27,980.28-38,583.18-21,607.89

Finding the Fourth Proportional to 27,980.28, 38,583.18 and 21,607.89

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Solution

The fourth proportional to 27,980.28, 38,583.18 and 21,607.89 is: 29,796.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,980.28 : 38,583.18 = 21,607.89 : x
  2. Step 2: Convert to fraction form
    27,980.28/38,583.18 = 21,607.89/x
  3. Step 3: Cross multiply
    27,980.28x = 38,583.18 × 21,607.89
  4. Step 4: Simplify right side
    27,980.28x = 833,701,109.29
  5. Step 5: Solve for x
    x = 833,701,109.29/27,980.28
  6. Step 6: Final answer
    x = 29,796.02

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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.