Home / 31,430.45-47,200.35-16,668.20

Finding the Fourth Proportional to 31,430.45, 47,200.35 and 16,668.20

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Solution

The fourth proportional to 31,430.45, 47,200.35 and 16,668.20 is: 25,031.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.45 : 47,200.35 = 16,668.20 : x
  2. Step 2: Convert to fraction form
    31,430.45/47,200.35 = 16,668.20/x
  3. Step 3: Cross multiply
    31,430.45x = 47,200.35 × 16,668.20
  4. Step 4: Simplify right side
    31,430.45x = 786,744,873.87
  5. Step 5: Solve for x
    x = 786,744,873.87/31,430.45
  6. Step 6: Final answer
    x = 25,031.30

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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.