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Finding the Fourth Proportional to 11,316.51, 15,611.54 and 7,064.82

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Solution

The fourth proportional to 11,316.51, 15,611.54 and 7,064.82 is: 9,746.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.51 : 15,611.54 = 7,064.82 : x
  2. Step 2: Convert to fraction form
    11,316.51/15,611.54 = 7,064.82/x
  3. Step 3: Cross multiply
    11,316.51x = 15,611.54 × 7,064.82
  4. Step 4: Simplify right side
    11,316.51x = 110,292,684.70
  5. Step 5: Solve for x
    x = 110,292,684.70/11,316.51
  6. Step 6: Final answer
    x = 9,746.17

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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.