Home / 13,443.91-20,165.79-4,678.75

Finding the Fourth Proportional to 13,443.91, 20,165.79 and 4,678.75

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Solution

The fourth proportional to 13,443.91, 20,165.79 and 4,678.75 is: 7,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.91 : 20,165.79 = 4,678.75 : x
  2. Step 2: Convert to fraction form
    13,443.91/20,165.79 = 4,678.75/x
  3. Step 3: Cross multiply
    13,443.91x = 20,165.79 × 4,678.75
  4. Step 4: Simplify right side
    13,443.91x = 94,350,689.96
  5. Step 5: Solve for x
    x = 94,350,689.96/13,443.91
  6. Step 6: Final answer
    x = 7,018.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.