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Finding the Fourth Proportional to 19,248.93, 28,860.93 and 12,655.13

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Solution

The fourth proportional to 19,248.93, 28,860.93 and 12,655.13 is: 18,974.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,248.93 : 28,860.93 = 12,655.13 : x
  2. Step 2: Convert to fraction form
    19,248.93/28,860.93 = 12,655.13/x
  3. Step 3: Cross multiply
    19,248.93x = 28,860.93 × 12,655.13
  4. Step 4: Simplify right side
    19,248.93x = 365,238,676.77
  5. Step 5: Solve for x
    x = 365,238,676.77/19,248.93
  6. Step 6: Final answer
    x = 18,974.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.