Home / 13,173.28-19,590.49-12,758.02

Finding the Fourth Proportional to 13,173.28, 19,590.49 and 12,758.02

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Solution

The fourth proportional to 13,173.28, 19,590.49 and 12,758.02 is: 18,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.28 : 19,590.49 = 12,758.02 : x
  2. Step 2: Convert to fraction form
    13,173.28/19,590.49 = 12,758.02/x
  3. Step 3: Cross multiply
    13,173.28x = 19,590.49 × 12,758.02
  4. Step 4: Simplify right side
    13,173.28x = 249,935,863.23
  5. Step 5: Solve for x
    x = 249,935,863.23/13,173.28
  6. Step 6: Final answer
    x = 18,972.94

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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.