Home / 12,256.47-16,913.88-7,220.66

Finding the Fourth Proportional to 12,256.47, 16,913.88 and 7,220.66

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Solution

The fourth proportional to 12,256.47, 16,913.88 and 7,220.66 is: 9,964.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256.47 : 16,913.88 = 7,220.66 : x
  2. Step 2: Convert to fraction form
    12,256.47/16,913.88 = 7,220.66/x
  3. Step 3: Cross multiply
    12,256.47x = 16,913.88 × 7,220.66
  4. Step 4: Simplify right side
    12,256.47x = 122,129,292.19
  5. Step 5: Solve for x
    x = 122,129,292.19/12,256.47
  6. Step 6: Final answer
    x = 9,964.48

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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.