Home / 30,808.08-42,515.10-17,379.29

Finding the Fourth Proportional to 30,808.08, 42,515.10 and 17,379.29

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Solution

The fourth proportional to 30,808.08, 42,515.10 and 17,379.29 is: 23,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,808.08 : 42,515.10 = 17,379.29 : x
  2. Step 2: Convert to fraction form
    30,808.08/42,515.10 = 17,379.29/x
  3. Step 3: Cross multiply
    30,808.08x = 42,515.10 × 17,379.29
  4. Step 4: Simplify right side
    30,808.08x = 738,882,358.57
  5. Step 5: Solve for x
    x = 738,882,358.57/30,808.08
  6. Step 6: Final answer
    x = 23,983.40

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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.