Home / 28,200.68-38,916.94-16,870.65

Finding the Fourth Proportional to 28,200.68, 38,916.94 and 16,870.65

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Solution

The fourth proportional to 28,200.68, 38,916.94 and 16,870.65 is: 23,281.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.68 : 38,916.94 = 16,870.65 : x
  2. Step 2: Convert to fraction form
    28,200.68/38,916.94 = 16,870.65/x
  3. Step 3: Cross multiply
    28,200.68x = 38,916.94 × 16,870.65
  4. Step 4: Simplify right side
    28,200.68x = 656,554,073.81
  5. Step 5: Solve for x
    x = 656,554,073.81/28,200.68
  6. Step 6: Final answer
    x = 23,281.50

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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.