Home / 13,923.28-20,870.34-6,521.50

Finding the Fourth Proportional to 13,923.28, 20,870.34 and 6,521.50

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Solution

The fourth proportional to 13,923.28, 20,870.34 and 6,521.50 is: 9,775.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.28 : 20,870.34 = 6,521.50 : x
  2. Step 2: Convert to fraction form
    13,923.28/20,870.34 = 6,521.50/x
  3. Step 3: Cross multiply
    13,923.28x = 20,870.34 × 6,521.50
  4. Step 4: Simplify right side
    13,923.28x = 136,105,922.31
  5. Step 5: Solve for x
    x = 136,105,922.31/13,923.28
  6. Step 6: Final answer
    x = 9,775.42

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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.