Home / 28,288.58-39,038.25-15,542.58

Finding the Fourth Proportional to 28,288.58, 39,038.25 and 15,542.58

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Solution

The fourth proportional to 28,288.58, 39,038.25 and 15,542.58 is: 21,448.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.58 : 39,038.25 = 15,542.58 : x
  2. Step 2: Convert to fraction form
    28,288.58/39,038.25 = 15,542.58/x
  3. Step 3: Cross multiply
    28,288.58x = 39,038.25 × 15,542.58
  4. Step 4: Simplify right side
    28,288.58x = 606,755,123.69
  5. Step 5: Solve for x
    x = 606,755,123.69/28,288.58
  6. Step 6: Final answer
    x = 21,448.77

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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.