Home / 30,898.08-42,639.12-16,750.80

Finding the Fourth Proportional to 30,898.08, 42,639.12 and 16,750.80

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Solution

The fourth proportional to 30,898.08, 42,639.12 and 16,750.80 is: 23,115.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,898.08 : 42,639.12 = 16,750.80 : x
  2. Step 2: Convert to fraction form
    30,898.08/42,639.12 = 16,750.80/x
  3. Step 3: Cross multiply
    30,898.08x = 42,639.12 × 16,750.80
  4. Step 4: Simplify right side
    30,898.08x = 714,239,371.30
  5. Step 5: Solve for x
    x = 714,239,371.30/30,898.08
  6. Step 6: Final answer
    x = 23,115.98

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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.