Home / 14,267.28-19,688.88-7,979.64

Finding the Fourth Proportional to 14,267.28, 19,688.88 and 7,979.64

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Solution

The fourth proportional to 14,267.28, 19,688.88 and 7,979.64 is: 11,011.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,267.28 : 19,688.88 = 7,979.64 : x
  2. Step 2: Convert to fraction form
    14,267.28/19,688.88 = 7,979.64/x
  3. Step 3: Cross multiply
    14,267.28x = 19,688.88 × 7,979.64
  4. Step 4: Simplify right side
    14,267.28x = 157,110,174.40
  5. Step 5: Solve for x
    x = 157,110,174.40/14,267.28
  6. Step 6: Final answer
    x = 11,011.92

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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.