Home / 31,678.48-47,500.08-12,971.62

Finding the Fourth Proportional to 31,678.48, 47,500.08 and 12,971.62

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Solution

The fourth proportional to 31,678.48, 47,500.08 and 12,971.62 is: 19,450.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,678.48 : 47,500.08 = 12,971.62 : x
  2. Step 2: Convert to fraction form
    31,678.48/47,500.08 = 12,971.62/x
  3. Step 3: Cross multiply
    31,678.48x = 47,500.08 × 12,971.62
  4. Step 4: Simplify right side
    31,678.48x = 616,152,987.73
  5. Step 5: Solve for x
    x = 616,152,987.73/31,678.48
  6. Step 6: Final answer
    x = 19,450.21

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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.