Home / 13,928.92-19,223.12-7,642.50

Finding the Fourth Proportional to 13,928.92, 19,223.12 and 7,642.50

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Solution

The fourth proportional to 13,928.92, 19,223.12 and 7,642.50 is: 10,547.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.92 : 19,223.12 = 7,642.50 : x
  2. Step 2: Convert to fraction form
    13,928.92/19,223.12 = 7,642.50/x
  3. Step 3: Cross multiply
    13,928.92x = 19,223.12 × 7,642.50
  4. Step 4: Simplify right side
    13,928.92x = 146,912,694.60
  5. Step 5: Solve for x
    x = 146,912,694.60/13,928.92
  6. Step 6: Final answer
    x = 10,547.31

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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.