Home / 19,815.10-27,346.57-10,864.31

Finding the Fourth Proportional to 19,815.10, 27,346.57 and 10,864.31

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Solution

The fourth proportional to 19,815.10, 27,346.57 and 10,864.31 is: 14,993.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.10 : 27,346.57 = 10,864.31 : x
  2. Step 2: Convert to fraction form
    19,815.10/27,346.57 = 10,864.31/x
  3. Step 3: Cross multiply
    19,815.10x = 27,346.57 × 10,864.31
  4. Step 4: Simplify right side
    19,815.10x = 297,101,655.12
  5. Step 5: Solve for x
    x = 297,101,655.12/19,815.10
  6. Step 6: Final answer
    x = 14,993.70

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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.