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Finding the Fourth Proportional to 19,804.58, 27,320.10 and 13,429.01

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Solution

The fourth proportional to 19,804.58, 27,320.10 and 13,429.01 is: 18,525.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,804.58 : 27,320.10 = 13,429.01 : x
  2. Step 2: Convert to fraction form
    19,804.58/27,320.10 = 13,429.01/x
  3. Step 3: Cross multiply
    19,804.58x = 27,320.10 × 13,429.01
  4. Step 4: Simplify right side
    19,804.58x = 366,881,914.04
  5. Step 5: Solve for x
    x = 366,881,914.04/19,804.58
  6. Step 6: Final answer
    x = 18,525.11

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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.