Home / 15,585.20-23,329.20-12,280.40

Finding the Fourth Proportional to 15,585.20, 23,329.20 and 12,280.40

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Solution

The fourth proportional to 15,585.20, 23,329.20 and 12,280.40 is: 18,382.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.20 : 23,329.20 = 12,280.40 : x
  2. Step 2: Convert to fraction form
    15,585.20/23,329.20 = 12,280.40/x
  3. Step 3: Cross multiply
    15,585.20x = 23,329.20 × 12,280.40
  4. Step 4: Simplify right side
    15,585.20x = 286,491,907.68
  5. Step 5: Solve for x
    x = 286,491,907.68/15,585.20
  6. Step 6: Final answer
    x = 18,382.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.