Home / 28,458.60-39,273.81-16,521.21

Finding the Fourth Proportional to 28,458.60, 39,273.81 and 16,521.21

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Solution

The fourth proportional to 28,458.60, 39,273.81 and 16,521.21 is: 22,799.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.60 : 39,273.81 = 16,521.21 : x
  2. Step 2: Convert to fraction form
    28,458.60/39,273.81 = 16,521.21/x
  3. Step 3: Cross multiply
    28,458.60x = 39,273.81 × 16,521.21
  4. Step 4: Simplify right side
    28,458.60x = 648,850,862.51
  5. Step 5: Solve for x
    x = 648,850,862.51/28,458.60
  6. Step 6: Final answer
    x = 22,799.82

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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.