Home / 20,930.46-31,370.15-11,570.10

Finding the Fourth Proportional to 20,930.46, 31,370.15 and 11,570.10

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Solution

The fourth proportional to 20,930.46, 31,370.15 and 11,570.10 is: 17,341.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.46 : 31,370.15 = 11,570.10 : x
  2. Step 2: Convert to fraction form
    20,930.46/31,370.15 = 11,570.10/x
  3. Step 3: Cross multiply
    20,930.46x = 31,370.15 × 11,570.10
  4. Step 4: Simplify right side
    20,930.46x = 362,955,772.52
  5. Step 5: Solve for x
    x = 362,955,772.52/20,930.46
  6. Step 6: Final answer
    x = 17,341.03

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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.