Home / 28,421.92-39,210.78-18,866.44

Finding the Fourth Proportional to 28,421.92, 39,210.78 and 18,866.44

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Solution

The fourth proportional to 28,421.92, 39,210.78 and 18,866.44 is: 26,028.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.92 : 39,210.78 = 18,866.44 : x
  2. Step 2: Convert to fraction form
    28,421.92/39,210.78 = 18,866.44/x
  3. Step 3: Cross multiply
    28,421.92x = 39,210.78 × 18,866.44
  4. Step 4: Simplify right side
    28,421.92x = 739,767,828.22
  5. Step 5: Solve for x
    x = 739,767,828.22/28,421.92
  6. Step 6: Final answer
    x = 26,028.07

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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.