Home / 17,678.72-24,371.12-11,700.40

Finding the Fourth Proportional to 17,678.72, 24,371.12 and 11,700.40

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Solution

The fourth proportional to 17,678.72, 24,371.12 and 11,700.40 is: 16,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,678.72 : 24,371.12 = 11,700.40 : x
  2. Step 2: Convert to fraction form
    17,678.72/24,371.12 = 11,700.40/x
  3. Step 3: Cross multiply
    17,678.72x = 24,371.12 × 11,700.40
  4. Step 4: Simplify right side
    17,678.72x = 285,151,852.45
  5. Step 5: Solve for x
    x = 285,151,852.45/17,678.72
  6. Step 6: Final answer
    x = 16,129.67

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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.