Home / 13,670.40-18,884.16-12,960.84

Finding the Fourth Proportional to 13,670.40, 18,884.16 and 12,960.84

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Solution

The fourth proportional to 13,670.40, 18,884.16 and 12,960.84 is: 17,903.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.40 : 18,884.16 = 12,960.84 : x
  2. Step 2: Convert to fraction form
    13,670.40/18,884.16 = 12,960.84/x
  3. Step 3: Cross multiply
    13,670.40x = 18,884.16 × 12,960.84
  4. Step 4: Simplify right side
    13,670.40x = 244,754,576.29
  5. Step 5: Solve for x
    x = 244,754,576.29/13,670.40
  6. Step 6: Final answer
    x = 17,903.98

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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.