Home / 39,030.78-53,862.44-21,125.73

Finding the Fourth Proportional to 39,030.78, 53,862.44 and 21,125.73

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Solution

The fourth proportional to 39,030.78, 53,862.44 and 21,125.73 is: 29,153.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,030.78 : 53,862.44 = 21,125.73 : x
  2. Step 2: Convert to fraction form
    39,030.78/53,862.44 = 21,125.73/x
  3. Step 3: Cross multiply
    39,030.78x = 53,862.44 × 21,125.73
  4. Step 4: Simplify right side
    39,030.78x = 1,137,883,364.58
  5. Step 5: Solve for x
    x = 1,137,883,364.58/39,030.78
  6. Step 6: Final answer
    x = 29,153.49

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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.