Home / 13,318.40-19,948.80-11,859.20

Finding the Fourth Proportional to 13,318.40, 19,948.80 and 11,859.20

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Solution

The fourth proportional to 13,318.40, 19,948.80 and 11,859.20 is: 17,763.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.40 : 19,948.80 = 11,859.20 : x
  2. Step 2: Convert to fraction form
    13,318.40/19,948.80 = 11,859.20/x
  3. Step 3: Cross multiply
    13,318.40x = 19,948.80 × 11,859.20
  4. Step 4: Simplify right side
    13,318.40x = 236,576,808.96
  5. Step 5: Solve for x
    x = 236,576,808.96/13,318.40
  6. Step 6: Final answer
    x = 17,763.16

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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.