Home / 30,890.77-42,628.89-16,743.45

Finding the Fourth Proportional to 30,890.77, 42,628.89 and 16,743.45

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Solution

The fourth proportional to 30,890.77, 42,628.89 and 16,743.45 is: 23,105.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,890.77 : 42,628.89 = 16,743.45 : x
  2. Step 2: Convert to fraction form
    30,890.77/42,628.89 = 16,743.45/x
  3. Step 3: Cross multiply
    30,890.77x = 42,628.89 × 16,743.45
  4. Step 4: Simplify right side
    30,890.77x = 713,754,688.27
  5. Step 5: Solve for x
    x = 713,754,688.27/30,890.77
  6. Step 6: Final answer
    x = 23,105.76

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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.