Home / 28,938.81-39,937.11-16,191.23

Finding the Fourth Proportional to 28,938.81, 39,937.11 and 16,191.23

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Solution

The fourth proportional to 28,938.81, 39,937.11 and 16,191.23 is: 22,344.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,938.81 : 39,937.11 = 16,191.23 : x
  2. Step 2: Convert to fraction form
    28,938.81/39,937.11 = 16,191.23/x
  3. Step 3: Cross multiply
    28,938.81x = 39,937.11 × 16,191.23
  4. Step 4: Simplify right side
    28,938.81x = 646,631,033.39
  5. Step 5: Solve for x
    x = 646,631,033.39/28,938.81
  6. Step 6: Final answer
    x = 22,344.77

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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.