Home / 14,215.92-19,618.56-7,928.16

Finding the Fourth Proportional to 14,215.92, 19,618.56 and 7,928.16

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Solution

The fourth proportional to 14,215.92, 19,618.56 and 7,928.16 is: 10,941.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,215.92 : 19,618.56 = 7,928.16 : x
  2. Step 2: Convert to fraction form
    14,215.92/19,618.56 = 7,928.16/x
  3. Step 3: Cross multiply
    14,215.92x = 19,618.56 × 7,928.16
  4. Step 4: Simplify right side
    14,215.92x = 155,539,082.65
  5. Step 5: Solve for x
    x = 155,539,082.65/14,215.92
  6. Step 6: Final answer
    x = 10,941.19

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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.