Home / 13,141.52-19,688.68-7,212.04

Finding the Fourth Proportional to 13,141.52, 19,688.68 and 7,212.04

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Solution

The fourth proportional to 13,141.52, 19,688.68 and 7,212.04 is: 10,805.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.52 : 19,688.68 = 7,212.04 : x
  2. Step 2: Convert to fraction form
    13,141.52/19,688.68 = 7,212.04/x
  3. Step 3: Cross multiply
    13,141.52x = 19,688.68 × 7,212.04
  4. Step 4: Simplify right side
    13,141.52x = 141,995,547.71
  5. Step 5: Solve for x
    x = 141,995,547.71/13,141.52
  6. Step 6: Final answer
    x = 10,805.11

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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.