Home / 38,453.60-53,065.96-21,686.56

Finding the Fourth Proportional to 38,453.60, 53,065.96 and 21,686.56

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Solution

The fourth proportional to 38,453.60, 53,065.96 and 21,686.56 is: 29,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,453.60 : 53,065.96 = 21,686.56 : x
  2. Step 2: Convert to fraction form
    38,453.60/53,065.96 = 21,686.56/x
  3. Step 3: Cross multiply
    38,453.60x = 53,065.96 × 21,686.56
  4. Step 4: Simplify right side
    38,453.60x = 1,150,818,125.50
  5. Step 5: Solve for x
    x = 1,150,818,125.50/38,453.60
  6. Step 6: Final answer
    x = 29,927.45

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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.