Home / 17,378.12-23,981.85-9,420.38

Finding the Fourth Proportional to 17,378.12, 23,981.85 and 9,420.38

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Solution

The fourth proportional to 17,378.12, 23,981.85 and 9,420.38 is: 13,000.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,378.12 : 23,981.85 = 9,420.38 : x
  2. Step 2: Convert to fraction form
    17,378.12/23,981.85 = 9,420.38/x
  3. Step 3: Cross multiply
    17,378.12x = 23,981.85 × 9,420.38
  4. Step 4: Simplify right side
    17,378.12x = 225,918,020.19
  5. Step 5: Solve for x
    x = 225,918,020.19/17,378.12
  6. Step 6: Final answer
    x = 13,000.15

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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.