Home / 38,913.26-53,701.34-21,918.11

Finding the Fourth Proportional to 38,913.26, 53,701.34 and 21,918.11

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Solution

The fourth proportional to 38,913.26, 53,701.34 and 21,918.11 is: 30,247.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,913.26 : 53,701.34 = 21,918.11 : x
  2. Step 2: Convert to fraction form
    38,913.26/53,701.34 = 21,918.11/x
  3. Step 3: Cross multiply
    38,913.26x = 53,701.34 × 21,918.11
  4. Step 4: Simplify right side
    38,913.26x = 1,177,031,499.17
  5. Step 5: Solve for x
    x = 1,177,031,499.17/38,913.26
  6. Step 6: Final answer
    x = 30,247.57

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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.