Home / 30,878.08-42,611.76-16,730.92

Finding the Fourth Proportional to 30,878.08, 42,611.76 and 16,730.92

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Solution

The fourth proportional to 30,878.08, 42,611.76 and 16,730.92 is: 23,088.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,878.08 : 42,611.76 = 16,730.92 : x
  2. Step 2: Convert to fraction form
    30,878.08/42,611.76 = 16,730.92/x
  3. Step 3: Cross multiply
    30,878.08x = 42,611.76 × 16,730.92
  4. Step 4: Simplify right side
    30,878.08x = 712,933,947.62
  5. Step 5: Solve for x
    x = 712,933,947.62/30,878.08
  6. Step 6: Final answer
    x = 23,088.67

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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.