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Finding the Fourth Proportional to 10,903.11, 15,051.63 and 7,316.79

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Solution

The fourth proportional to 10,903.11, 15,051.63 and 7,316.79 is: 10,100.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,903.11 : 15,051.63 = 7,316.79 : x
  2. Step 2: Convert to fraction form
    10,903.11/15,051.63 = 7,316.79/x
  3. Step 3: Cross multiply
    10,903.11x = 15,051.63 × 7,316.79
  4. Step 4: Simplify right side
    10,903.11x = 110,129,615.87
  5. Step 5: Solve for x
    x = 110,129,615.87/10,903.11
  6. Step 6: Final answer
    x = 10,100.75

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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.