Home / 19,478.66-26,880.57-12,409.20

Finding the Fourth Proportional to 19,478.66, 26,880.57 and 12,409.20

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Solution

The fourth proportional to 19,478.66, 26,880.57 and 12,409.20 is: 17,124.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.66 : 26,880.57 = 12,409.20 : x
  2. Step 2: Convert to fraction form
    19,478.66/26,880.57 = 12,409.20/x
  3. Step 3: Cross multiply
    19,478.66x = 26,880.57 × 12,409.20
  4. Step 4: Simplify right side
    19,478.66x = 333,566,369.24
  5. Step 5: Solve for x
    x = 333,566,369.24/19,478.66
  6. Step 6: Final answer
    x = 17,124.71

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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.