Home / 12,727.40-17,567.16-7,140.20

Finding the Fourth Proportional to 12,727.40, 17,567.16 and 7,140.20

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Solution

The fourth proportional to 12,727.40, 17,567.16 and 7,140.20 is: 9,855.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,727.40 : 17,567.16 = 7,140.20 : x
  2. Step 2: Convert to fraction form
    12,727.40/17,567.16 = 7,140.20/x
  3. Step 3: Cross multiply
    12,727.40x = 17,567.16 × 7,140.20
  4. Step 4: Simplify right side
    12,727.40x = 125,433,079.75
  5. Step 5: Solve for x
    x = 125,433,079.75/12,727.40
  6. Step 6: Final answer
    x = 9,855.36

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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.