Home / 25,828.14-35,653.68-21,869.76

Finding the Fourth Proportional to 25,828.14, 35,653.68 and 21,869.76

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Solution

The fourth proportional to 25,828.14, 35,653.68 and 21,869.76 is: 30,189.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,828.14 : 35,653.68 = 21,869.76 : x
  2. Step 2: Convert to fraction form
    25,828.14/35,653.68 = 21,869.76/x
  3. Step 3: Cross multiply
    25,828.14x = 35,653.68 × 21,869.76
  4. Step 4: Simplify right side
    25,828.14x = 779,737,424.72
  5. Step 5: Solve for x
    x = 779,737,424.72/25,828.14
  6. Step 6: Final answer
    x = 30,189.45

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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.