Home / 30,890.04-42,628.41-16,742.76

Finding the Fourth Proportional to 30,890.04, 42,628.41 and 16,742.76

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Solution

The fourth proportional to 30,890.04, 42,628.41 and 16,742.76 is: 23,105.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,890.04 : 42,628.41 = 16,742.76 : x
  2. Step 2: Convert to fraction form
    30,890.04/42,628.41 = 16,742.76/x
  3. Step 3: Cross multiply
    30,890.04x = 42,628.41 × 16,742.76
  4. Step 4: Simplify right side
    30,890.04x = 713,717,237.81
  5. Step 5: Solve for x
    x = 713,717,237.81/30,890.04
  6. Step 6: Final answer
    x = 23,105.09

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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.