Home / 9,918.13-13,686.13-5,668.34

Finding the Fourth Proportional to 9,918.13, 13,686.13 and 5,668.34

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Solution

The fourth proportional to 9,918.13, 13,686.13 and 5,668.34 is: 7,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.13 : 13,686.13 = 5,668.34 : x
  2. Step 2: Convert to fraction form
    9,918.13/13,686.13 = 5,668.34/x
  3. Step 3: Cross multiply
    9,918.13x = 13,686.13 × 5,668.34
  4. Step 4: Simplify right side
    9,918.13x = 77,577,638.12
  5. Step 5: Solve for x
    x = 77,577,638.12/9,918.13
  6. Step 6: Final answer
    x = 7,821.80

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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.