Home / 12,478.14-18,717.93-4,687.02

Finding the Fourth Proportional to 12,478.14, 18,717.93 and 4,687.02

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Solution

The fourth proportional to 12,478.14, 18,717.93 and 4,687.02 is: 7,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.14 : 18,717.93 = 4,687.02 : x
  2. Step 2: Convert to fraction form
    12,478.14/18,717.93 = 4,687.02/x
  3. Step 3: Cross multiply
    12,478.14x = 18,717.93 × 4,687.02
  4. Step 4: Simplify right side
    12,478.14x = 87,731,312.27
  5. Step 5: Solve for x
    x = 87,731,312.27/12,478.14
  6. Step 6: Final answer
    x = 7,030.80

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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.