Home / 19,810.12-27,338.07-10,857.70

Finding the Fourth Proportional to 19,810.12, 27,338.07 and 10,857.70

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Solution

The fourth proportional to 19,810.12, 27,338.07 and 10,857.70 is: 14,983.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,810.12 : 27,338.07 = 10,857.70 : x
  2. Step 2: Convert to fraction form
    19,810.12/27,338.07 = 10,857.70/x
  3. Step 3: Cross multiply
    19,810.12x = 27,338.07 × 10,857.70
  4. Step 4: Simplify right side
    19,810.12x = 296,828,562.64
  5. Step 5: Solve for x
    x = 296,828,562.64/19,810.12
  6. Step 6: Final answer
    x = 14,983.68

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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.