Home / 31,749.92-47,618.40-12,021.68

Finding the Fourth Proportional to 31,749.92, 47,618.40 and 12,021.68

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Solution

The fourth proportional to 31,749.92, 47,618.40 and 12,021.68 is: 18,030.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,749.92 : 47,618.40 = 12,021.68 : x
  2. Step 2: Convert to fraction form
    31,749.92/47,618.40 = 12,021.68/x
  3. Step 3: Cross multiply
    31,749.92x = 47,618.40 × 12,021.68
  4. Step 4: Simplify right side
    31,749.92x = 572,453,166.91
  5. Step 5: Solve for x
    x = 572,453,166.91/31,749.92
  6. Step 6: Final answer
    x = 18,030.07

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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.