Home / 28,200.23-38,916.33-16,870.21

Finding the Fourth Proportional to 28,200.23, 38,916.33 and 16,870.21

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Solution

The fourth proportional to 28,200.23, 38,916.33 and 16,870.21 is: 23,280.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.23 : 38,916.33 = 16,870.21 : x
  2. Step 2: Convert to fraction form
    28,200.23/38,916.33 = 16,870.21/x
  3. Step 3: Cross multiply
    28,200.23x = 38,916.33 × 16,870.21
  4. Step 4: Simplify right side
    28,200.23x = 656,526,593.87
  5. Step 5: Solve for x
    x = 656,526,593.87/28,200.23
  6. Step 6: Final answer
    x = 23,280.89

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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.