Home / 13,219.16-19,829.82-5,428.04

Finding the Fourth Proportional to 13,219.16, 19,829.82 and 5,428.04

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Solution

The fourth proportional to 13,219.16, 19,829.82 and 5,428.04 is: 8,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.16 : 19,829.82 = 5,428.04 : x
  2. Step 2: Convert to fraction form
    13,219.16/19,829.82 = 5,428.04/x
  3. Step 3: Cross multiply
    13,219.16x = 19,829.82 × 5,428.04
  4. Step 4: Simplify right side
    13,219.16x = 107,637,056.15
  5. Step 5: Solve for x
    x = 107,637,056.15/13,219.16
  6. Step 6: Final answer
    x = 8,142.50

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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.