Home / 20,698.20-28,563.12-11,266.74

Finding the Fourth Proportional to 20,698.20, 28,563.12 and 11,266.74

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Solution

The fourth proportional to 20,698.20, 28,563.12 and 11,266.74 is: 15,547.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.20 : 28,563.12 = 11,266.74 : x
  2. Step 2: Convert to fraction form
    20,698.20/28,563.12 = 11,266.74/x
  3. Step 3: Cross multiply
    20,698.20x = 28,563.12 × 11,266.74
  4. Step 4: Simplify right side
    20,698.20x = 321,813,246.63
  5. Step 5: Solve for x
    x = 321,813,246.63/20,698.20
  6. Step 6: Final answer
    x = 15,547.89

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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.