Home / 39,661.65-54,733.77-21,756.51

Finding the Fourth Proportional to 39,661.65, 54,733.77 and 21,756.51

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Solution

The fourth proportional to 39,661.65, 54,733.77 and 21,756.51 is: 30,024.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,661.65 : 54,733.77 = 21,756.51 : x
  2. Step 2: Convert to fraction form
    39,661.65/54,733.77 = 21,756.51/x
  3. Step 3: Cross multiply
    39,661.65x = 54,733.77 × 21,756.51
  4. Step 4: Simplify right side
    39,661.65x = 1,190,815,814.34
  5. Step 5: Solve for x
    x = 1,190,815,814.34/39,661.65
  6. Step 6: Final answer
    x = 30,024.36

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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.