Home / 20,473.40-30,689.58-8,630.02

Finding the Fourth Proportional to 20,473.40, 30,689.58 and 8,630.02

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Solution

The fourth proportional to 20,473.40, 30,689.58 and 8,630.02 is: 12,936.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.40 : 30,689.58 = 8,630.02 : x
  2. Step 2: Convert to fraction form
    20,473.40/30,689.58 = 8,630.02/x
  3. Step 3: Cross multiply
    20,473.40x = 30,689.58 × 8,630.02
  4. Step 4: Simplify right side
    20,473.40x = 264,851,689.19
  5. Step 5: Solve for x
    x = 264,851,689.19/20,473.40
  6. Step 6: Final answer
    x = 12,936.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.