Home / 28,331.87-39,106.22-18,900.41

Finding the Fourth Proportional to 28,331.87, 39,106.22 and 18,900.41

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Solution

The fourth proportional to 28,331.87, 39,106.22 and 18,900.41 is: 26,088.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.87 : 39,106.22 = 18,900.41 : x
  2. Step 2: Convert to fraction form
    28,331.87/39,106.22 = 18,900.41/x
  3. Step 3: Cross multiply
    28,331.87x = 39,106.22 × 18,900.41
  4. Step 4: Simplify right side
    28,331.87x = 739,123,301.52
  5. Step 5: Solve for x
    x = 739,123,301.52/28,331.87
  6. Step 6: Final answer
    x = 26,088.06

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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.