Home / 19,776.64-27,301.80-13,436.76

Finding the Fourth Proportional to 19,776.64, 27,301.80 and 13,436.76

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Solution

The fourth proportional to 19,776.64, 27,301.80 and 13,436.76 is: 18,549.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.64 : 27,301.80 = 13,436.76 : x
  2. Step 2: Convert to fraction form
    19,776.64/27,301.80 = 13,436.76/x
  3. Step 3: Cross multiply
    19,776.64x = 27,301.80 × 13,436.76
  4. Step 4: Simplify right side
    19,776.64x = 366,847,734.17
  5. Step 5: Solve for x
    x = 366,847,734.17/19,776.64
  6. Step 6: Final answer
    x = 18,549.55

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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.