Home / 13,288.28-19,926.95-10,521.72

Finding the Fourth Proportional to 13,288.28, 19,926.95 and 10,521.72

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Solution

The fourth proportional to 13,288.28, 19,926.95 and 10,521.72 is: 15,778.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.28 : 19,926.95 = 10,521.72 : x
  2. Step 2: Convert to fraction form
    13,288.28/19,926.95 = 10,521.72/x
  3. Step 3: Cross multiply
    13,288.28x = 19,926.95 × 10,521.72
  4. Step 4: Simplify right side
    13,288.28x = 209,665,735.75
  5. Step 5: Solve for x
    x = 209,665,735.75/13,288.28
  6. Step 6: Final answer
    x = 15,778.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.