Home / 11,397.36-15,728.76-6,681.36

Finding the Fourth Proportional to 11,397.36, 15,728.76 and 6,681.36

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Solution

The fourth proportional to 11,397.36, 15,728.76 and 6,681.36 is: 9,220.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.36 : 15,728.76 = 6,681.36 : x
  2. Step 2: Convert to fraction form
    11,397.36/15,728.76 = 6,681.36/x
  3. Step 3: Cross multiply
    11,397.36x = 15,728.76 × 6,681.36
  4. Step 4: Simplify right side
    11,397.36x = 105,089,507.91
  5. Step 5: Solve for x
    x = 105,089,507.91/11,397.36
  6. Step 6: Final answer
    x = 9,220.51

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Half scale
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Double scale
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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.