Home / 28,331.50-39,097.47-15,756.25

Finding the Fourth Proportional to 28,331.50, 39,097.47 and 15,756.25

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Solution

The fourth proportional to 28,331.50, 39,097.47 and 15,756.25 is: 21,743.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.50 : 39,097.47 = 15,756.25 : x
  2. Step 2: Convert to fraction form
    28,331.50/39,097.47 = 15,756.25/x
  3. Step 3: Cross multiply
    28,331.50x = 39,097.47 × 15,756.25
  4. Step 4: Simplify right side
    28,331.50x = 616,029,511.69
  5. Step 5: Solve for x
    x = 616,029,511.69/28,331.50
  6. Step 6: Final answer
    x = 21,743.63

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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.