Home / 28,310.40-39,070.53-16,980.35

Finding the Fourth Proportional to 28,310.40, 39,070.53 and 16,980.35

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Solution

The fourth proportional to 28,310.40, 39,070.53 and 16,980.35 is: 23,434.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.40 : 39,070.53 = 16,980.35 : x
  2. Step 2: Convert to fraction form
    28,310.40/39,070.53 = 16,980.35/x
  3. Step 3: Cross multiply
    28,310.40x = 39,070.53 × 16,980.35
  4. Step 4: Simplify right side
    28,310.40x = 663,431,078.73
  5. Step 5: Solve for x
    x = 663,431,078.73/28,310.40
  6. Step 6: Final answer
    x = 23,434.18

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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.