Home / 20,521.76-30,758.34-9,419.10

Finding the Fourth Proportional to 20,521.76, 30,758.34 and 9,419.10

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Solution

The fourth proportional to 20,521.76, 30,758.34 and 9,419.10 is: 14,117.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.76 : 30,758.34 = 9,419.10 : x
  2. Step 2: Convert to fraction form
    20,521.76/30,758.34 = 9,419.10/x
  3. Step 3: Cross multiply
    20,521.76x = 30,758.34 × 9,419.10
  4. Step 4: Simplify right side
    20,521.76x = 289,715,880.29
  5. Step 5: Solve for x
    x = 289,715,880.29/20,521.76
  6. Step 6: Final answer
    x = 14,117.50

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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.