Home / 31,516.49-47,242.85-20,430.23

Finding the Fourth Proportional to 31,516.49, 47,242.85 and 20,430.23

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Solution

The fourth proportional to 31,516.49, 47,242.85 and 20,430.23 is: 30,624.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,516.49 : 47,242.85 = 20,430.23 : x
  2. Step 2: Convert to fraction form
    31,516.49/47,242.85 = 20,430.23/x
  3. Step 3: Cross multiply
    31,516.49x = 47,242.85 × 20,430.23
  4. Step 4: Simplify right side
    31,516.49x = 965,181,952.99
  5. Step 5: Solve for x
    x = 965,181,952.99/31,516.49
  6. Step 6: Final answer
    x = 30,624.66

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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.