Home / 20,453.18-30,678.14-7,304.18

Finding the Fourth Proportional to 20,453.18, 30,678.14 and 7,304.18

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Solution

The fourth proportional to 20,453.18, 30,678.14 and 7,304.18 is: 10,955.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.18 : 30,678.14 = 7,304.18 : x
  2. Step 2: Convert to fraction form
    20,453.18/30,678.14 = 7,304.18/x
  3. Step 3: Cross multiply
    20,453.18x = 30,678.14 × 7,304.18
  4. Step 4: Simplify right side
    20,453.18x = 224,078,521.49
  5. Step 5: Solve for x
    x = 224,078,521.49/20,453.18
  6. Step 6: Final answer
    x = 10,955.68

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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.