Home / 18,931.84-28,394.10-6,450.76

Finding the Fourth Proportional to 18,931.84, 28,394.10 and 6,450.76

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Solution

The fourth proportional to 18,931.84, 28,394.10 and 6,450.76 is: 9,674.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.84 : 28,394.10 = 6,450.76 : x
  2. Step 2: Convert to fraction form
    18,931.84/28,394.10 = 6,450.76/x
  3. Step 3: Cross multiply
    18,931.84x = 28,394.10 × 6,450.76
  4. Step 4: Simplify right side
    18,931.84x = 183,163,524.52
  5. Step 5: Solve for x
    x = 183,163,524.52/18,931.84
  6. Step 6: Final answer
    x = 9,674.89

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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.