Home / 20,935.79-28,892.67-11,983.08

Finding the Fourth Proportional to 20,935.79, 28,892.67 and 11,983.08

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Solution

The fourth proportional to 20,935.79, 28,892.67 and 11,983.08 is: 16,537.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.79 : 28,892.67 = 11,983.08 : x
  2. Step 2: Convert to fraction form
    20,935.79/28,892.67 = 11,983.08/x
  3. Step 3: Cross multiply
    20,935.79x = 28,892.67 × 11,983.08
  4. Step 4: Simplify right side
    20,935.79x = 346,223,176.02
  5. Step 5: Solve for x
    x = 346,223,176.02/20,935.79
  6. Step 6: Final answer
    x = 16,537.39

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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.