Home / 20,953.07-28,914.03-11,521.64

Finding the Fourth Proportional to 20,953.07, 28,914.03 and 11,521.64

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Solution

The fourth proportional to 20,953.07, 28,914.03 and 11,521.64 is: 15,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.07 : 28,914.03 = 11,521.64 : x
  2. Step 2: Convert to fraction form
    20,953.07/28,914.03 = 11,521.64/x
  3. Step 3: Cross multiply
    20,953.07x = 28,914.03 × 11,521.64
  4. Step 4: Simplify right side
    20,953.07x = 333,137,044.61
  5. Step 5: Solve for x
    x = 333,137,044.61/20,953.07
  6. Step 6: Final answer
    x = 15,899.20

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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.