Home / 18,933.12-26,127.72-10,979.96

Finding the Fourth Proportional to 18,933.12, 26,127.72 and 10,979.96

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Solution

The fourth proportional to 18,933.12, 26,127.72 and 10,979.96 is: 15,152.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.12 : 26,127.72 = 10,979.96 : x
  2. Step 2: Convert to fraction form
    18,933.12/26,127.72 = 10,979.96/x
  3. Step 3: Cross multiply
    18,933.12x = 26,127.72 × 10,979.96
  4. Step 4: Simplify right side
    18,933.12x = 286,881,320.49
  5. Step 5: Solve for x
    x = 286,881,320.49/18,933.12
  6. Step 6: Final answer
    x = 15,152.35

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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.