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Finding the Fourth Proportional to 38,562.45, 53,215.16 and 21,795.45

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Solution

The fourth proportional to 38,562.45, 53,215.16 and 21,795.45 is: 30,077.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,562.45 : 53,215.16 = 21,795.45 : x
  2. Step 2: Convert to fraction form
    38,562.45/53,215.16 = 21,795.45/x
  3. Step 3: Cross multiply
    38,562.45x = 53,215.16 × 21,795.45
  4. Step 4: Simplify right side
    38,562.45x = 1,159,848,250.04
  5. Step 5: Solve for x
    x = 1,159,848,250.04/38,562.45
  6. Step 6: Final answer
    x = 30,077.14

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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.