Home / 14,188.28-19,579.60-7,815.48

Finding the Fourth Proportional to 14,188.28, 19,579.60 and 7,815.48

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Solution

The fourth proportional to 14,188.28, 19,579.60 and 7,815.48 is: 10,785.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,188.28 : 19,579.60 = 7,815.48 : x
  2. Step 2: Convert to fraction form
    14,188.28/19,579.60 = 7,815.48/x
  3. Step 3: Cross multiply
    14,188.28x = 19,579.60 × 7,815.48
  4. Step 4: Simplify right side
    14,188.28x = 153,023,952.67
  5. Step 5: Solve for x
    x = 153,023,952.67/14,188.28
  6. Step 6: Final answer
    x = 10,785.23

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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.