Home / 12,988.02-17,911.26-8,734.44

Finding the Fourth Proportional to 12,988.02, 17,911.26 and 8,734.44

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Solution

The fourth proportional to 12,988.02, 17,911.26 and 8,734.44 is: 12,045.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.02 : 17,911.26 = 8,734.44 : x
  2. Step 2: Convert to fraction form
    12,988.02/17,911.26 = 8,734.44/x
  3. Step 3: Cross multiply
    12,988.02x = 17,911.26 × 8,734.44
  4. Step 4: Simplify right side
    12,988.02x = 156,444,825.79
  5. Step 5: Solve for x
    x = 156,444,825.79/12,988.02
  6. Step 6: Final answer
    x = 12,045.32

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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.