Home / 39,028.69-53,859.49-21,123.70

Finding the Fourth Proportional to 39,028.69, 53,859.49 and 21,123.70

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Solution

The fourth proportional to 39,028.69, 53,859.49 and 21,123.70 is: 29,150.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,028.69 : 53,859.49 = 21,123.70 : x
  2. Step 2: Convert to fraction form
    39,028.69/53,859.49 = 21,123.70/x
  3. Step 3: Cross multiply
    39,028.69x = 53,859.49 × 21,123.70
  4. Step 4: Simplify right side
    39,028.69x = 1,137,711,521.46
  5. Step 5: Solve for x
    x = 1,137,711,521.46/39,028.69
  6. Step 6: Final answer
    x = 29,150.65

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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.