Home / 13,577.79-20,371.14-8,574.39

Finding the Fourth Proportional to 13,577.79, 20,371.14 and 8,574.39

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Solution

The fourth proportional to 13,577.79, 20,371.14 and 8,574.39 is: 12,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,577.79 : 20,371.14 = 8,574.39 : x
  2. Step 2: Convert to fraction form
    13,577.79/20,371.14 = 8,574.39/x
  3. Step 3: Cross multiply
    13,577.79x = 20,371.14 × 8,574.39
  4. Step 4: Simplify right side
    13,577.79x = 174,670,099.10
  5. Step 5: Solve for x
    x = 174,670,099.10/13,577.79
  6. Step 6: Final answer
    x = 12,864.40

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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.