Home / 13,920.26-20,852.57-8,370.56

Finding the Fourth Proportional to 13,920.26, 20,852.57 and 8,370.56

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Solution

The fourth proportional to 13,920.26, 20,852.57 and 8,370.56 is: 12,539.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.26 : 20,852.57 = 8,370.56 : x
  2. Step 2: Convert to fraction form
    13,920.26/20,852.57 = 8,370.56/x
  3. Step 3: Cross multiply
    13,920.26x = 20,852.57 × 8,370.56
  4. Step 4: Simplify right side
    13,920.26x = 174,547,646.49
  5. Step 5: Solve for x
    x = 174,547,646.49/13,920.26
  6. Step 6: Final answer
    x = 12,539.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.