Home / 18,868.32-28,270.96-13,312.48

Finding the Fourth Proportional to 18,868.32, 28,270.96 and 13,312.48

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Solution

The fourth proportional to 18,868.32, 28,270.96 and 13,312.48 is: 19,946.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.32 : 28,270.96 = 13,312.48 : x
  2. Step 2: Convert to fraction form
    18,868.32/28,270.96 = 13,312.48/x
  3. Step 3: Cross multiply
    18,868.32x = 28,270.96 × 13,312.48
  4. Step 4: Simplify right side
    18,868.32x = 376,356,589.58
  5. Step 5: Solve for x
    x = 376,356,589.58/18,868.32
  6. Step 6: Final answer
    x = 19,946.48

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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.