Home / 20,970.43-31,458.07-10,443.67

Finding the Fourth Proportional to 20,970.43, 31,458.07 and 10,443.67

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Solution

The fourth proportional to 20,970.43, 31,458.07 and 10,443.67 is: 15,666.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.43 : 31,458.07 = 10,443.67 : x
  2. Step 2: Convert to fraction form
    20,970.43/31,458.07 = 10,443.67/x
  3. Step 3: Cross multiply
    20,970.43x = 31,458.07 × 10,443.67
  4. Step 4: Simplify right side
    20,970.43x = 328,537,636.33
  5. Step 5: Solve for x
    x = 328,537,636.33/20,970.43
  6. Step 6: Final answer
    x = 15,666.71

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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.