Home / 13,899.92-19,180.85-7,930.40

Finding the Fourth Proportional to 13,899.92, 19,180.85 and 7,930.40

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Solution

The fourth proportional to 13,899.92, 19,180.85 and 7,930.40 is: 10,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,899.92 : 19,180.85 = 7,930.40 : x
  2. Step 2: Convert to fraction form
    13,899.92/19,180.85 = 7,930.40/x
  3. Step 3: Cross multiply
    13,899.92x = 19,180.85 × 7,930.40
  4. Step 4: Simplify right side
    13,899.92x = 152,111,677.28
  5. Step 5: Solve for x
    x = 152,111,677.28/13,899.92
  6. Step 6: Final answer
    x = 10,943.35

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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.