Home / 12,515.81-17,271.77-6,851.07

Finding the Fourth Proportional to 12,515.81, 17,271.77 and 6,851.07

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Solution

The fourth proportional to 12,515.81, 17,271.77 and 6,851.07 is: 9,454.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.81 : 17,271.77 = 6,851.07 : x
  2. Step 2: Convert to fraction form
    12,515.81/17,271.77 = 6,851.07/x
  3. Step 3: Cross multiply
    12,515.81x = 17,271.77 × 6,851.07
  4. Step 4: Simplify right side
    12,515.81x = 118,330,071.04
  5. Step 5: Solve for x
    x = 118,330,071.04/12,515.81
  6. Step 6: Final answer
    x = 9,454.45

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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.