Home / 19,520.49-26,935.38-11,859.78

Finding the Fourth Proportional to 19,520.49, 26,935.38 and 11,859.78

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Solution

The fourth proportional to 19,520.49, 26,935.38 and 11,859.78 is: 16,364.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,520.49 : 26,935.38 = 11,859.78 : x
  2. Step 2: Convert to fraction form
    19,520.49/26,935.38 = 11,859.78/x
  3. Step 3: Cross multiply
    19,520.49x = 26,935.38 × 11,859.78
  4. Step 4: Simplify right side
    19,520.49x = 319,447,681.02
  5. Step 5: Solve for x
    x = 319,447,681.02/19,520.49
  6. Step 6: Final answer
    x = 16,364.74

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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.