Home / 28,205.20-38,922.51-15,457.96

Finding the Fourth Proportional to 28,205.20, 38,922.51 and 15,457.96

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Solution

The fourth proportional to 28,205.20, 38,922.51 and 15,457.96 is: 21,331.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205.20 : 38,922.51 = 15,457.96 : x
  2. Step 2: Convert to fraction form
    28,205.20/38,922.51 = 15,457.96/x
  3. Step 3: Cross multiply
    28,205.20x = 38,922.51 × 15,457.96
  4. Step 4: Simplify right side
    28,205.20x = 601,662,602.68
  5. Step 5: Solve for x
    x = 601,662,602.68/28,205.20
  6. Step 6: Final answer
    x = 21,331.62

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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.