Home / 15,054.35-20,778.46-10,018.78

Finding the Fourth Proportional to 15,054.35, 20,778.46 and 10,018.78

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Solution

The fourth proportional to 15,054.35, 20,778.46 and 10,018.78 is: 13,828.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,054.35 : 20,778.46 = 10,018.78 : x
  2. Step 2: Convert to fraction form
    15,054.35/20,778.46 = 10,018.78/x
  3. Step 3: Cross multiply
    15,054.35x = 20,778.46 × 10,018.78
  4. Step 4: Simplify right side
    15,054.35x = 208,174,820.40
  5. Step 5: Solve for x
    x = 208,174,820.40/15,054.35
  6. Step 6: Final answer
    x = 13,828.22

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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.