Home / 12,851.90-19,263.45-5,455.10

Finding the Fourth Proportional to 12,851.90, 19,263.45 and 5,455.10

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Solution

The fourth proportional to 12,851.90, 19,263.45 and 5,455.10 is: 8,176.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,851.90 : 19,263.45 = 5,455.10 : x
  2. Step 2: Convert to fraction form
    12,851.90/19,263.45 = 5,455.10/x
  3. Step 3: Cross multiply
    12,851.90x = 19,263.45 × 5,455.10
  4. Step 4: Simplify right side
    12,851.90x = 105,084,046.10
  5. Step 5: Solve for x
    x = 105,084,046.10/12,851.90
  6. Step 6: Final answer
    x = 8,176.54

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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.