Home / 12,437.40-18,677.70-6,605.40

Finding the Fourth Proportional to 12,437.40, 18,677.70 and 6,605.40

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Solution

The fourth proportional to 12,437.40, 18,677.70 and 6,605.40 is: 9,919.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,437.40 : 18,677.70 = 6,605.40 : x
  2. Step 2: Convert to fraction form
    12,437.40/18,677.70 = 6,605.40/x
  3. Step 3: Cross multiply
    12,437.40x = 18,677.70 × 6,605.40
  4. Step 4: Simplify right side
    12,437.40x = 123,373,679.58
  5. Step 5: Solve for x
    x = 123,373,679.58/12,437.40
  6. Step 6: Final answer
    x = 9,919.57

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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.