Home / 20,898.07-28,839.23-11,338.15

Finding the Fourth Proportional to 20,898.07, 28,839.23 and 11,338.15

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Solution

The fourth proportional to 20,898.07, 28,839.23 and 11,338.15 is: 15,646.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.07 : 28,839.23 = 11,338.15 : x
  2. Step 2: Convert to fraction form
    20,898.07/28,839.23 = 11,338.15/x
  3. Step 3: Cross multiply
    20,898.07x = 28,839.23 × 11,338.15
  4. Step 4: Simplify right side
    20,898.07x = 326,983,386.84
  5. Step 5: Solve for x
    x = 326,983,386.84/20,898.07
  6. Step 6: Final answer
    x = 15,646.58

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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.