Home / 12,369.84-18,560.70-4,979.40

Finding the Fourth Proportional to 12,369.84, 18,560.70 and 4,979.40

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Solution

The fourth proportional to 12,369.84, 18,560.70 and 4,979.40 is: 7,471.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,369.84 : 18,560.70 = 4,979.40 : x
  2. Step 2: Convert to fraction form
    12,369.84/18,560.70 = 4,979.40/x
  3. Step 3: Cross multiply
    12,369.84x = 18,560.70 × 4,979.40
  4. Step 4: Simplify right side
    12,369.84x = 92,421,149.58
  5. Step 5: Solve for x
    x = 92,421,149.58/12,369.84
  6. Step 6: Final answer
    x = 7,471.49

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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.