Home / 13,146.40-19,718.56-5,248.64

Finding the Fourth Proportional to 13,146.40, 19,718.56 and 5,248.64

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Solution

The fourth proportional to 13,146.40, 19,718.56 and 5,248.64 is: 7,872.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.40 : 19,718.56 = 5,248.64 : x
  2. Step 2: Convert to fraction form
    13,146.40/19,718.56 = 5,248.64/x
  3. Step 3: Cross multiply
    13,146.40x = 19,718.56 × 5,248.64
  4. Step 4: Simplify right side
    13,146.40x = 103,495,622.76
  5. Step 5: Solve for x
    x = 103,495,622.76/13,146.40
  6. Step 6: Final answer
    x = 7,872.54

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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.