Home / 20,624.08-28,488.36-15,814.84

Finding the Fourth Proportional to 20,624.08, 28,488.36 and 15,814.84

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Solution

The fourth proportional to 20,624.08, 28,488.36 and 15,814.84 is: 21,845.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,624.08 : 28,488.36 = 15,814.84 : x
  2. Step 2: Convert to fraction form
    20,624.08/28,488.36 = 15,814.84/x
  3. Step 3: Cross multiply
    20,624.08x = 28,488.36 × 15,814.84
  4. Step 4: Simplify right side
    20,624.08x = 450,538,855.26
  5. Step 5: Solve for x
    x = 450,538,855.26/20,624.08
  6. Step 6: Final answer
    x = 21,845.28

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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.