Home / 16,678.13-23,015.82-10,390.50

Finding the Fourth Proportional to 16,678.13, 23,015.82 and 10,390.50

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Solution

The fourth proportional to 16,678.13, 23,015.82 and 10,390.50 is: 14,338.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,678.13 : 23,015.82 = 10,390.50 : x
  2. Step 2: Convert to fraction form
    16,678.13/23,015.82 = 10,390.50/x
  3. Step 3: Cross multiply
    16,678.13x = 23,015.82 × 10,390.50
  4. Step 4: Simplify right side
    16,678.13x = 239,145,877.71
  5. Step 5: Solve for x
    x = 239,145,877.71/16,678.13
  6. Step 6: Final answer
    x = 14,338.89

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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.