Home / 20,297.85-28,019.67-12,342.63

Finding the Fourth Proportional to 20,297.85, 28,019.67 and 12,342.63

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Solution

The fourth proportional to 20,297.85, 28,019.67 and 12,342.63 is: 17,038.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.85 : 28,019.67 = 12,342.63 : x
  2. Step 2: Convert to fraction form
    20,297.85/28,019.67 = 12,342.63/x
  3. Step 3: Cross multiply
    20,297.85x = 28,019.67 × 12,342.63
  4. Step 4: Simplify right side
    20,297.85x = 345,836,419.53
  5. Step 5: Solve for x
    x = 345,836,419.53/20,297.85
  6. Step 6: Final answer
    x = 17,038.08

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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.