Home / 12,385.14-18,577.70-5,359.40

Finding the Fourth Proportional to 12,385.14, 18,577.70 and 5,359.40

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Solution

The fourth proportional to 12,385.14, 18,577.70 and 5,359.40 is: 8,039.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.14 : 18,577.70 = 5,359.40 : x
  2. Step 2: Convert to fraction form
    12,385.14/18,577.70 = 5,359.40/x
  3. Step 3: Cross multiply
    12,385.14x = 18,577.70 × 5,359.40
  4. Step 4: Simplify right side
    12,385.14x = 99,565,325.38
  5. Step 5: Solve for x
    x = 99,565,325.38/12,385.14
  6. Step 6: Final answer
    x = 8,039.10

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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.