Home / 36,031.50-49,710.33-20,918.79

Finding the Fourth Proportional to 36,031.50, 49,710.33 and 20,918.79

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Solution

The fourth proportional to 36,031.50, 49,710.33 and 20,918.79 is: 28,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,031.50 : 49,710.33 = 20,918.79 : x
  2. Step 2: Convert to fraction form
    36,031.50/49,710.33 = 20,918.79/x
  3. Step 3: Cross multiply
    36,031.50x = 49,710.33 × 20,918.79
  4. Step 4: Simplify right side
    36,031.50x = 1,039,879,954.10
  5. Step 5: Solve for x
    x = 1,039,879,954.10/36,031.50
  6. Step 6: Final answer
    x = 28,860.30

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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.