Home / 12,801.90-19,191.81-5,204.19

Finding the Fourth Proportional to 12,801.90, 19,191.81 and 5,204.19

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Solution

The fourth proportional to 12,801.90, 19,191.81 and 5,204.19 is: 7,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,801.90 : 19,191.81 = 5,204.19 : x
  2. Step 2: Convert to fraction form
    12,801.90/19,191.81 = 5,204.19/x
  3. Step 3: Cross multiply
    12,801.90x = 19,191.81 × 5,204.19
  4. Step 4: Simplify right side
    12,801.90x = 99,877,825.68
  5. Step 5: Solve for x
    x = 99,877,825.68/12,801.90
  6. Step 6: Final answer
    x = 7,801.80

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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.