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Finding the Fourth Proportional to 13,918.16, 19,207.20 and 7,950.08

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Solution

The fourth proportional to 13,918.16, 19,207.20 and 7,950.08 is: 10,971.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.16 : 19,207.20 = 7,950.08 : x
  2. Step 2: Convert to fraction form
    13,918.16/19,207.20 = 7,950.08/x
  3. Step 3: Cross multiply
    13,918.16x = 19,207.20 × 7,950.08
  4. Step 4: Simplify right side
    13,918.16x = 152,698,776.58
  5. Step 5: Solve for x
    x = 152,698,776.58/13,918.16
  6. Step 6: Final answer
    x = 10,971.19

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1.5x scale

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.