Home / 28,249.82-38,985-16,315.19

Finding the Fourth Proportional to 28,249.82, 38,985 and 16,315.19

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Solution

The fourth proportional to 28,249.82, 38,985 and 16,315.19 is: 22,515.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249.82 : 38,985 = 16,315.19 : x
  2. Step 2: Convert to fraction form
    28,249.82/38,985 = 16,315.19/x
  3. Step 3: Cross multiply
    28,249.82x = 38,985 × 16,315.19
  4. Step 4: Simplify right side
    28,249.82x = 636,047,682.15
  5. Step 5: Solve for x
    x = 636,047,682.15/28,249.82
  6. Step 6: Final answer
    x = 22,515.11

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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.