Home / 20,426.82-28,188.26-12,482.34

Finding the Fourth Proportional to 20,426.82, 28,188.26 and 12,482.34

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Solution

The fourth proportional to 20,426.82, 28,188.26 and 12,482.34 is: 17,225.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.82 : 28,188.26 = 12,482.34 : x
  2. Step 2: Convert to fraction form
    20,426.82/28,188.26 = 12,482.34/x
  3. Step 3: Cross multiply
    20,426.82x = 28,188.26 × 12,482.34
  4. Step 4: Simplify right side
    20,426.82x = 351,855,445.33
  5. Step 5: Solve for x
    x = 351,855,445.33/20,426.82
  6. Step 6: Final answer
    x = 17,225.17

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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.