Home / 31,713.89-47,536.47-20,628.50

Finding the Fourth Proportional to 31,713.89, 47,536.47 and 20,628.50

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Solution

The fourth proportional to 31,713.89, 47,536.47 and 20,628.50 is: 30,920.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,713.89 : 47,536.47 = 20,628.50 : x
  2. Step 2: Convert to fraction form
    31,713.89/47,536.47 = 20,628.50/x
  3. Step 3: Cross multiply
    31,713.89x = 47,536.47 × 20,628.50
  4. Step 4: Simplify right side
    31,713.89x = 980,605,833.71
  5. Step 5: Solve for x
    x = 980,605,833.71/31,713.89
  6. Step 6: Final answer
    x = 30,920.39

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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.