Home / 12,890.40-19,341.80-6,313

Finding the Fourth Proportional to 12,890.40, 19,341.80 and 6,313

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Solution

The fourth proportional to 12,890.40, 19,341.80 and 6,313 is: 9,472.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.40 : 19,341.80 = 6,313 : x
  2. Step 2: Convert to fraction form
    12,890.40/19,341.80 = 6,313/x
  3. Step 3: Cross multiply
    12,890.40x = 19,341.80 × 6,313
  4. Step 4: Simplify right side
    12,890.40x = 122,104,783.40
  5. Step 5: Solve for x
    x = 122,104,783.40/12,890.40
  6. Step 6: Final answer
    x = 9,472.54

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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.