Home / 20,955.07-28,916.79-11,523.64

Finding the Fourth Proportional to 20,955.07, 28,916.79 and 11,523.64

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Solution

The fourth proportional to 20,955.07, 28,916.79 and 11,523.64 is: 15,901.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.07 : 28,916.79 = 11,523.64 : x
  2. Step 2: Convert to fraction form
    20,955.07/28,916.79 = 11,523.64/x
  3. Step 3: Cross multiply
    20,955.07x = 28,916.79 × 11,523.64
  4. Step 4: Simplify right side
    20,955.07x = 333,226,677.92
  5. Step 5: Solve for x
    x = 333,226,677.92/20,955.07
  6. Step 6: Final answer
    x = 15,901.96

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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.