Home / 38,530.76-53,172.45-21,535.70

Finding the Fourth Proportional to 38,530.76, 53,172.45 and 21,535.70

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Solution

The fourth proportional to 38,530.76, 53,172.45 and 21,535.70 is: 29,719.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,530.76 : 53,172.45 = 21,535.70 : x
  2. Step 2: Convert to fraction form
    38,530.76/53,172.45 = 21,535.70/x
  3. Step 3: Cross multiply
    38,530.76x = 53,172.45 × 21,535.70
  4. Step 4: Simplify right side
    38,530.76x = 1,145,105,665.60
  5. Step 5: Solve for x
    x = 1,145,105,665.60/38,530.76
  6. Step 6: Final answer
    x = 29,719.26

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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.