Home / 47,958.90-71,931.87-12,900.66

Finding the Fourth Proportional to 47,958.90, 71,931.87 and 12,900.66

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Solution

The fourth proportional to 47,958.90, 71,931.87 and 12,900.66 is: 19,349.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,958.90 : 71,931.87 = 12,900.66 : x
  2. Step 2: Convert to fraction form
    47,958.90/71,931.87 = 12,900.66/x
  3. Step 3: Cross multiply
    47,958.90x = 71,931.87 × 12,900.66
  4. Step 4: Simplify right side
    47,958.90x = 927,968,598.03
  5. Step 5: Solve for x
    x = 927,968,598.03/47,958.90
  6. Step 6: Final answer
    x = 19,349.25

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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.