Home / 57,983.40-86,980.56-18,531.14

Finding the Fourth Proportional to 57,983.40, 86,980.56 and 18,531.14

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Solution

The fourth proportional to 57,983.40, 86,980.56 and 18,531.14 is: 27,798.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,983.40 : 86,980.56 = 18,531.14 : x
  2. Step 2: Convert to fraction form
    57,983.40/86,980.56 = 18,531.14/x
  3. Step 3: Cross multiply
    57,983.40x = 86,980.56 × 18,531.14
  4. Step 4: Simplify right side
    57,983.40x = 1,611,848,934.64
  5. Step 5: Solve for x
    x = 1,611,848,934.64/57,983.40
  6. Step 6: Final answer
    x = 27,798.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.