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Finding the Fourth Proportional to 19,507.74, 26,918.72 and 11,009.10

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Solution

The fourth proportional to 19,507.74, 26,918.72 and 11,009.10 is: 15,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,507.74 : 26,918.72 = 11,009.10 : x
  2. Step 2: Convert to fraction form
    19,507.74/26,918.72 = 11,009.10/x
  3. Step 3: Cross multiply
    19,507.74x = 26,918.72 × 11,009.10
  4. Step 4: Simplify right side
    19,507.74x = 296,350,880.35
  5. Step 5: Solve for x
    x = 296,350,880.35/19,507.74
  6. Step 6: Final answer
    x = 15,191.45

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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.