Home / 19,515.77-26,943.35-12,813.11

Finding the Fourth Proportional to 19,515.77, 26,943.35 and 12,813.11

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Solution

The fourth proportional to 19,515.77, 26,943.35 and 12,813.11 is: 17,689.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,515.77 : 26,943.35 = 12,813.11 : x
  2. Step 2: Convert to fraction form
    19,515.77/26,943.35 = 12,813.11/x
  3. Step 3: Cross multiply
    19,515.77x = 26,943.35 × 12,813.11
  4. Step 4: Simplify right side
    19,515.77x = 345,227,908.54
  5. Step 5: Solve for x
    x = 345,227,908.54/19,515.77
  6. Step 6: Final answer
    x = 17,689.69

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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.