Home / 13,269.69-18,313.02-7,890.66

Finding the Fourth Proportional to 13,269.69, 18,313.02 and 7,890.66

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Solution

The fourth proportional to 13,269.69, 18,313.02 and 7,890.66 is: 10,889.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.69 : 18,313.02 = 7,890.66 : x
  2. Step 2: Convert to fraction form
    13,269.69/18,313.02 = 7,890.66/x
  3. Step 3: Cross multiply
    13,269.69x = 18,313.02 × 7,890.66
  4. Step 4: Simplify right side
    13,269.69x = 144,501,814.39
  5. Step 5: Solve for x
    x = 144,501,814.39/13,269.69
  6. Step 6: Final answer
    x = 10,889.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.