Home / 13,207.92-19,700.56-12,289.36

Finding the Fourth Proportional to 13,207.92, 19,700.56 and 12,289.36

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Solution

The fourth proportional to 13,207.92, 19,700.56 and 12,289.36 is: 18,330.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.92 : 19,700.56 = 12,289.36 : x
  2. Step 2: Convert to fraction form
    13,207.92/19,700.56 = 12,289.36/x
  3. Step 3: Cross multiply
    13,207.92x = 19,700.56 × 12,289.36
  4. Step 4: Simplify right side
    13,207.92x = 242,107,274.04
  5. Step 5: Solve for x
    x = 242,107,274.04/13,207.92
  6. Step 6: Final answer
    x = 18,330.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.