Home / 31,720.79-47,581.96-10,661.14

Finding the Fourth Proportional to 31,720.79, 47,581.96 and 10,661.14

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Solution

The fourth proportional to 31,720.79, 47,581.96 and 10,661.14 is: 15,991.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,720.79 : 47,581.96 = 10,661.14 : x
  2. Step 2: Convert to fraction form
    31,720.79/47,581.96 = 10,661.14/x
  3. Step 3: Cross multiply
    31,720.79x = 47,581.96 × 10,661.14
  4. Step 4: Simplify right side
    31,720.79x = 507,277,937.03
  5. Step 5: Solve for x
    x = 507,277,937.03/31,720.79
  6. Step 6: Final answer
    x = 15,991.97

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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.