Home / 36,015.60-49,681.56-21,108.72

Finding the Fourth Proportional to 36,015.60, 49,681.56 and 21,108.72

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Solution

The fourth proportional to 36,015.60, 49,681.56 and 21,108.72 is: 29,118.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,015.60 : 49,681.56 = 21,108.72 : x
  2. Step 2: Convert to fraction form
    36,015.60/49,681.56 = 21,108.72/x
  3. Step 3: Cross multiply
    36,015.60x = 49,681.56 × 21,108.72
  4. Step 4: Simplify right side
    36,015.60x = 1,048,714,139.20
  5. Step 5: Solve for x
    x = 1,048,714,139.20/36,015.60
  6. Step 6: Final answer
    x = 29,118.33

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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.