Home / 28,902.85-39,885.32-16,155.68

Finding the Fourth Proportional to 28,902.85, 39,885.32 and 16,155.68

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Solution

The fourth proportional to 28,902.85, 39,885.32 and 16,155.68 is: 22,294.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902.85 : 39,885.32 = 16,155.68 : x
  2. Step 2: Convert to fraction form
    28,902.85/39,885.32 = 16,155.68/x
  3. Step 3: Cross multiply
    28,902.85x = 39,885.32 × 16,155.68
  4. Step 4: Simplify right side
    28,902.85x = 644,374,307.58
  5. Step 5: Solve for x
    x = 644,374,307.58/28,902.85
  6. Step 6: Final answer
    x = 22,294.49

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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.