Home / 19,818.61-27,348.65-11,319.07

Finding the Fourth Proportional to 19,818.61, 27,348.65 and 11,319.07

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Solution

The fourth proportional to 19,818.61, 27,348.65 and 11,319.07 is: 15,619.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.61 : 27,348.65 = 11,319.07 : x
  2. Step 2: Convert to fraction form
    19,818.61/27,348.65 = 11,319.07/x
  3. Step 3: Cross multiply
    19,818.61x = 27,348.65 × 11,319.07
  4. Step 4: Simplify right side
    19,818.61x = 309,561,227.16
  5. Step 5: Solve for x
    x = 309,561,227.16/19,818.61
  6. Step 6: Final answer
    x = 15,619.72

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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.