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Finding the Fourth Proportional to 12,903.58, 19,248.21 and 12,471.66

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Solution

The fourth proportional to 12,903.58, 19,248.21 and 12,471.66 is: 18,603.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.58 : 19,248.21 = 12,471.66 : x
  2. Step 2: Convert to fraction form
    12,903.58/19,248.21 = 12,471.66/x
  3. Step 3: Cross multiply
    12,903.58x = 19,248.21 × 12,471.66
  4. Step 4: Simplify right side
    12,903.58x = 240,057,130.73
  5. Step 5: Solve for x
    x = 240,057,130.73/12,903.58
  6. Step 6: Final answer
    x = 18,603.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.