Home / 13,140.64-19,713.28-4,376.08

Finding the Fourth Proportional to 13,140.64, 19,713.28 and 4,376.08

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Solution

The fourth proportional to 13,140.64, 19,713.28 and 4,376.08 is: 6,564.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.64 : 19,713.28 = 4,376.08 : x
  2. Step 2: Convert to fraction form
    13,140.64/19,713.28 = 4,376.08/x
  3. Step 3: Cross multiply
    13,140.64x = 19,713.28 × 4,376.08
  4. Step 4: Simplify right side
    13,140.64x = 86,266,890.34
  5. Step 5: Solve for x
    x = 86,266,890.34/13,140.64
  6. Step 6: Final answer
    x = 6,564.89

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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.