Home / 19,839.56-29,878.10-18,068.09

Finding the Fourth Proportional to 19,839.56, 29,878.10 and 18,068.09

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Solution

The fourth proportional to 19,839.56, 29,878.10 and 18,068.09 is: 27,210.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,839.56 : 29,878.10 = 18,068.09 : x
  2. Step 2: Convert to fraction form
    19,839.56/29,878.10 = 18,068.09/x
  3. Step 3: Cross multiply
    19,839.56x = 29,878.10 × 18,068.09
  4. Step 4: Simplify right side
    19,839.56x = 539,840,199.83
  5. Step 5: Solve for x
    x = 539,840,199.83/19,839.56
  6. Step 6: Final answer
    x = 27,210.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.