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Finding the Fourth Proportional to 12,712.41, 17,543.08 and 7,123.41

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Solution

The fourth proportional to 12,712.41, 17,543.08 and 7,123.41 is: 9,830.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.41 : 17,543.08 = 7,123.41 : x
  2. Step 2: Convert to fraction form
    12,712.41/17,543.08 = 7,123.41/x
  3. Step 3: Cross multiply
    12,712.41x = 17,543.08 × 7,123.41
  4. Step 4: Simplify right side
    12,712.41x = 124,966,533.69
  5. Step 5: Solve for x
    x = 124,966,533.69/12,712.41
  6. Step 6: Final answer
    x = 9,830.28

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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.