Home / 13,280.84-18,333.78-7,690.76

Finding the Fourth Proportional to 13,280.84, 18,333.78 and 7,690.76

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Solution

The fourth proportional to 13,280.84, 18,333.78 and 7,690.76 is: 10,616.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.84 : 18,333.78 = 7,690.76 : x
  2. Step 2: Convert to fraction form
    13,280.84/18,333.78 = 7,690.76/x
  3. Step 3: Cross multiply
    13,280.84x = 18,333.78 × 7,690.76
  4. Step 4: Simplify right side
    13,280.84x = 141,000,701.87
  5. Step 5: Solve for x
    x = 141,000,701.87/13,280.84
  6. Step 6: Final answer
    x = 10,616.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.