Home / 19,386.63-26,760.11-12,589.92

Finding the Fourth Proportional to 19,386.63, 26,760.11 and 12,589.92

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Solution

The fourth proportional to 19,386.63, 26,760.11 and 12,589.92 is: 17,378.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386.63 : 26,760.11 = 12,589.92 : x
  2. Step 2: Convert to fraction form
    19,386.63/26,760.11 = 12,589.92/x
  3. Step 3: Cross multiply
    19,386.63x = 26,760.11 × 12,589.92
  4. Step 4: Simplify right side
    19,386.63x = 336,907,581.14
  5. Step 5: Solve for x
    x = 336,907,581.14/19,386.63
  6. Step 6: Final answer
    x = 17,378.35

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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.