Home / 18,933.58-26,126.46-10,978.48

Finding the Fourth Proportional to 18,933.58, 26,126.46 and 10,978.48

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Solution

The fourth proportional to 18,933.58, 26,126.46 and 10,978.48 is: 15,149.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.58 : 26,126.46 = 10,978.48 : x
  2. Step 2: Convert to fraction form
    18,933.58/26,126.46 = 10,978.48/x
  3. Step 3: Cross multiply
    18,933.58x = 26,126.46 × 10,978.48
  4. Step 4: Simplify right side
    18,933.58x = 286,828,818.58
  5. Step 5: Solve for x
    x = 286,828,818.58/18,933.58
  6. Step 6: Final answer
    x = 15,149.21

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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.