Home / 20,929.08-28,882.34-11,369.06

Finding the Fourth Proportional to 20,929.08, 28,882.34 and 11,369.06

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Solution

The fourth proportional to 20,929.08, 28,882.34 and 11,369.06 is: 15,689.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.08 : 28,882.34 = 11,369.06 : x
  2. Step 2: Convert to fraction form
    20,929.08/28,882.34 = 11,369.06/x
  3. Step 3: Cross multiply
    20,929.08x = 28,882.34 × 11,369.06
  4. Step 4: Simplify right side
    20,929.08x = 328,364,855.14
  5. Step 5: Solve for x
    x = 328,364,855.14/20,929.08
  6. Step 6: Final answer
    x = 15,689.41

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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.