Home / 39,053.78-53,894.48-21,148.79

Finding the Fourth Proportional to 39,053.78, 53,894.48 and 21,148.79

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Solution

The fourth proportional to 39,053.78, 53,894.48 and 21,148.79 is: 29,185.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,053.78 : 53,894.48 = 21,148.79 : x
  2. Step 2: Convert to fraction form
    39,053.78/53,894.48 = 21,148.79/x
  3. Step 3: Cross multiply
    39,053.78x = 53,894.48 × 21,148.79
  4. Step 4: Simplify right side
    39,053.78x = 1,139,803,039.68
  5. Step 5: Solve for x
    x = 1,139,803,039.68/39,053.78
  6. Step 6: Final answer
    x = 29,185.47

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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.