Home / 13,360.64-18,438.40-8,394.24

Finding the Fourth Proportional to 13,360.64, 18,438.40 and 8,394.24

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Solution

The fourth proportional to 13,360.64, 18,438.40 and 8,394.24 is: 11,584.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.64 : 18,438.40 = 8,394.24 : x
  2. Step 2: Convert to fraction form
    13,360.64/18,438.40 = 8,394.24/x
  3. Step 3: Cross multiply
    13,360.64x = 18,438.40 × 8,394.24
  4. Step 4: Simplify right side
    13,360.64x = 154,776,354.82
  5. Step 5: Solve for x
    x = 154,776,354.82/13,360.64
  6. Step 6: Final answer
    x = 11,584.50

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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.