Home / 19,805.04-27,335.88-13,428.72

Finding the Fourth Proportional to 19,805.04, 27,335.88 and 13,428.72

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Solution

The fourth proportional to 19,805.04, 27,335.88 and 13,428.72 is: 18,534.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.04 : 27,335.88 = 13,428.72 : x
  2. Step 2: Convert to fraction form
    19,805.04/27,335.88 = 13,428.72/x
  3. Step 3: Cross multiply
    19,805.04x = 27,335.88 × 13,428.72
  4. Step 4: Simplify right side
    19,805.04x = 367,085,878.47
  5. Step 5: Solve for x
    x = 367,085,878.47/19,805.04
  6. Step 6: Final answer
    x = 18,534.97

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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.