Home / 20,849.49-28,774.71-11,898.28

Finding the Fourth Proportional to 20,849.49, 28,774.71 and 11,898.28

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Solution

The fourth proportional to 20,849.49, 28,774.71 and 11,898.28 is: 16,421.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.49 : 28,774.71 = 11,898.28 : x
  2. Step 2: Convert to fraction form
    20,849.49/28,774.71 = 11,898.28/x
  3. Step 3: Cross multiply
    20,849.49x = 28,774.71 × 11,898.28
  4. Step 4: Simplify right side
    20,849.49x = 342,369,592.47
  5. Step 5: Solve for x
    x = 342,369,592.47/20,849.49
  6. Step 6: Final answer
    x = 16,421.01

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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.