Home / 28,288.98-39,038.81-15,542.99

Finding the Fourth Proportional to 28,288.98, 39,038.81 and 15,542.99

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Solution

The fourth proportional to 28,288.98, 39,038.81 and 15,542.99 is: 21,449.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.98 : 39,038.81 = 15,542.99 : x
  2. Step 2: Convert to fraction form
    28,288.98/39,038.81 = 15,542.99/x
  3. Step 3: Cross multiply
    28,288.98x = 39,038.81 × 15,542.99
  4. Step 4: Simplify right side
    28,288.98x = 606,779,560.53
  5. Step 5: Solve for x
    x = 606,779,560.53/28,288.98
  6. Step 6: Final answer
    x = 21,449.33

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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.