Home / 12,720.08-19,084.16-5,706.12

Finding the Fourth Proportional to 12,720.08, 19,084.16 and 5,706.12

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Solution

The fourth proportional to 12,720.08, 19,084.16 and 5,706.12 is: 8,560.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.08 : 19,084.16 = 5,706.12 : x
  2. Step 2: Convert to fraction form
    12,720.08/19,084.16 = 5,706.12/x
  3. Step 3: Cross multiply
    12,720.08x = 19,084.16 × 5,706.12
  4. Step 4: Simplify right side
    12,720.08x = 108,896,478.53
  5. Step 5: Solve for x
    x = 108,896,478.53/12,720.08
  6. Step 6: Final answer
    x = 8,560.99

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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.