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Finding the Fourth Proportional to 10,901, 15,039.50 and 7,126.34

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Solution

The fourth proportional to 10,901, 15,039.50 and 7,126.34 is: 9,831.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,901 : 15,039.50 = 7,126.34 : x
  2. Step 2: Convert to fraction form
    10,901/15,039.50 = 7,126.34/x
  3. Step 3: Cross multiply
    10,901x = 15,039.50 × 7,126.34
  4. Step 4: Simplify right side
    10,901x = 107,176,515.23
  5. Step 5: Solve for x
    x = 107,176,515.23/10,901
  6. Step 6: Final answer
    x = 9,831.81

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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.