Home / 31,878.08-47,817.04-9,691.36

Finding the Fourth Proportional to 31,878.08, 47,817.04 and 9,691.36

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Solution

The fourth proportional to 31,878.08, 47,817.04 and 9,691.36 is: 14,537.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,878.08 : 47,817.04 = 9,691.36 : x
  2. Step 2: Convert to fraction form
    31,878.08/47,817.04 = 9,691.36/x
  3. Step 3: Cross multiply
    31,878.08x = 47,817.04 × 9,691.36
  4. Step 4: Simplify right side
    31,878.08x = 463,412,148.77
  5. Step 5: Solve for x
    x = 463,412,148.77/31,878.08
  6. Step 6: Final answer
    x = 14,537.02

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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.