Home / 28,902.40-39,885.06-20,300.68

Finding the Fourth Proportional to 28,902.40, 39,885.06 and 20,300.68

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Solution

The fourth proportional to 28,902.40, 39,885.06 and 20,300.68 is: 28,014.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902.40 : 39,885.06 = 20,300.68 : x
  2. Step 2: Convert to fraction form
    28,902.40/39,885.06 = 20,300.68/x
  3. Step 3: Cross multiply
    28,902.40x = 39,885.06 × 20,300.68
  4. Step 4: Simplify right side
    28,902.40x = 809,693,839.84
  5. Step 5: Solve for x
    x = 809,693,839.84/28,902.40
  6. Step 6: Final answer
    x = 28,014.76

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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.