Home / 12,422.90-17,143.55-6,897.59

Finding the Fourth Proportional to 12,422.90, 17,143.55 and 6,897.59

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Solution

The fourth proportional to 12,422.90, 17,143.55 and 6,897.59 is: 9,518.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.90 : 17,143.55 = 6,897.59 : x
  2. Step 2: Convert to fraction form
    12,422.90/17,143.55 = 6,897.59/x
  3. Step 3: Cross multiply
    12,422.90x = 17,143.55 × 6,897.59
  4. Step 4: Simplify right side
    12,422.90x = 118,249,148.99
  5. Step 5: Solve for x
    x = 118,249,148.99/12,422.90
  6. Step 6: Final answer
    x = 9,518.64

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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.