Home / 30,869.30-42,600.39-17,440.85

Finding the Fourth Proportional to 30,869.30, 42,600.39 and 17,440.85

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Solution

The fourth proportional to 30,869.30, 42,600.39 and 17,440.85 is: 24,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,869.30 : 42,600.39 = 17,440.85 : x
  2. Step 2: Convert to fraction form
    30,869.30/42,600.39 = 17,440.85/x
  3. Step 3: Cross multiply
    30,869.30x = 42,600.39 × 17,440.85
  4. Step 4: Simplify right side
    30,869.30x = 742,987,011.93
  5. Step 5: Solve for x
    x = 742,987,011.93/30,869.30
  6. Step 6: Final answer
    x = 24,068.80

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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.