Home / 13,930.11-19,223.33-7,642.35

Finding the Fourth Proportional to 13,930.11, 19,223.33 and 7,642.35

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Solution

The fourth proportional to 13,930.11, 19,223.33 and 7,642.35 is: 10,546.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.11 : 19,223.33 = 7,642.35 : x
  2. Step 2: Convert to fraction form
    13,930.11/19,223.33 = 7,642.35/x
  3. Step 3: Cross multiply
    13,930.11x = 19,223.33 × 7,642.35
  4. Step 4: Simplify right side
    13,930.11x = 146,911,377.81
  5. Step 5: Solve for x
    x = 146,911,377.81/13,930.11
  6. Step 6: Final answer
    x = 10,546.32

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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.