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Finding the Fourth Proportional to 12,311.69, 18,437.93 and 7,030.70

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Solution

The fourth proportional to 12,311.69, 18,437.93 and 7,030.70 is: 10,529.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.69 : 18,437.93 = 7,030.70 : x
  2. Step 2: Convert to fraction form
    12,311.69/18,437.93 = 7,030.70/x
  3. Step 3: Cross multiply
    12,311.69x = 18,437.93 × 7,030.70
  4. Step 4: Simplify right side
    12,311.69x = 129,631,427.11
  5. Step 5: Solve for x
    x = 129,631,427.11/12,311.69
  6. Step 6: Final answer
    x = 10,529.14

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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.