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Finding the Fourth Proportional to 13,437, 20,056.88 and 12,447.39

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Solution

The fourth proportional to 13,437, 20,056.88 and 12,447.39 is: 18,579.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437 : 20,056.88 = 12,447.39 : x
  2. Step 2: Convert to fraction form
    13,437/20,056.88 = 12,447.39/x
  3. Step 3: Cross multiply
    13,437x = 20,056.88 × 12,447.39
  4. Step 4: Simplify right side
    13,437x = 249,655,745.31
  5. Step 5: Solve for x
    x = 249,655,745.31/13,437
  6. Step 6: Final answer
    x = 18,579.72

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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.