Home / 19,350.72-26,694.14-12,640.28

Finding the Fourth Proportional to 19,350.72, 26,694.14 and 12,640.28

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Solution

The fourth proportional to 19,350.72, 26,694.14 and 12,640.28 is: 17,437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,350.72 : 26,694.14 = 12,640.28 : x
  2. Step 2: Convert to fraction form
    19,350.72/26,694.14 = 12,640.28/x
  3. Step 3: Cross multiply
    19,350.72x = 26,694.14 × 12,640.28
  4. Step 4: Simplify right side
    19,350.72x = 337,421,403.96
  5. Step 5: Solve for x
    x = 337,421,403.96/19,350.72
  6. Step 6: Final answer
    x = 17,437.15

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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.