Home / 20,707.92-31,057.53-6,669.20

Finding the Fourth Proportional to 20,707.92, 31,057.53 and 6,669.20

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Solution

The fourth proportional to 20,707.92, 31,057.53 and 6,669.20 is: 10,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.92 : 31,057.53 = 6,669.20 : x
  2. Step 2: Convert to fraction form
    20,707.92/31,057.53 = 6,669.20/x
  3. Step 3: Cross multiply
    20,707.92x = 31,057.53 × 6,669.20
  4. Step 4: Simplify right side
    20,707.92x = 207,128,931.71
  5. Step 5: Solve for x
    x = 207,128,931.71/20,707.92
  6. Step 6: Final answer
    x = 10,002.40

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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.