Home / 13,918.78-19,207.98-7,545.40

Finding the Fourth Proportional to 13,918.78, 19,207.98 and 7,545.40

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Solution

The fourth proportional to 13,918.78, 19,207.98 and 7,545.40 is: 10,412.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.78 : 19,207.98 = 7,545.40 : x
  2. Step 2: Convert to fraction form
    13,918.78/19,207.98 = 7,545.40/x
  3. Step 3: Cross multiply
    13,918.78x = 19,207.98 × 7,545.40
  4. Step 4: Simplify right side
    13,918.78x = 144,931,892.29
  5. Step 5: Solve for x
    x = 144,931,892.29/13,918.78
  6. Step 6: Final answer
    x = 10,412.69

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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.