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Finding the Fourth Proportional to 19,907.76, 27,472.01 and 10,955.03

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Solution

The fourth proportional to 19,907.76, 27,472.01 and 10,955.03 is: 15,117.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,907.76 : 27,472.01 = 10,955.03 : x
  2. Step 2: Convert to fraction form
    19,907.76/27,472.01 = 10,955.03/x
  3. Step 3: Cross multiply
    19,907.76x = 27,472.01 × 10,955.03
  4. Step 4: Simplify right side
    19,907.76x = 300,956,501.58
  5. Step 5: Solve for x
    x = 300,956,501.58/19,907.76
  6. Step 6: Final answer
    x = 15,117.55

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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.