Home / 20,659.04-31,001.28-8,176.94

Finding the Fourth Proportional to 20,659.04, 31,001.28 and 8,176.94

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Solution

The fourth proportional to 20,659.04, 31,001.28 and 8,176.94 is: 12,270.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.04 : 31,001.28 = 8,176.94 : x
  2. Step 2: Convert to fraction form
    20,659.04/31,001.28 = 8,176.94/x
  3. Step 3: Cross multiply
    20,659.04x = 31,001.28 × 8,176.94
  4. Step 4: Simplify right side
    20,659.04x = 253,495,606.48
  5. Step 5: Solve for x
    x = 253,495,606.48/20,659.04
  6. Step 6: Final answer
    x = 12,270.44

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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.