Home / 28,625.86-39,505.98-15,880.30

Finding the Fourth Proportional to 28,625.86, 39,505.98 and 15,880.30

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Solution

The fourth proportional to 28,625.86, 39,505.98 and 15,880.30 is: 21,916.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,625.86 : 39,505.98 = 15,880.30 : x
  2. Step 2: Convert to fraction form
    28,625.86/39,505.98 = 15,880.30/x
  3. Step 3: Cross multiply
    28,625.86x = 39,505.98 × 15,880.30
  4. Step 4: Simplify right side
    28,625.86x = 627,366,814.19
  5. Step 5: Solve for x
    x = 627,366,814.19/28,625.86
  6. Step 6: Final answer
    x = 21,916.09

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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.