Home / 20,899.33-31,341.71-9,206.17

Finding the Fourth Proportional to 20,899.33, 31,341.71 and 9,206.17

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Solution

The fourth proportional to 20,899.33, 31,341.71 and 9,206.17 is: 13,806.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.33 : 31,341.71 = 9,206.17 : x
  2. Step 2: Convert to fraction form
    20,899.33/31,341.71 = 9,206.17/x
  3. Step 3: Cross multiply
    20,899.33x = 31,341.71 × 9,206.17
  4. Step 4: Simplify right side
    20,899.33x = 288,537,205.42
  5. Step 5: Solve for x
    x = 288,537,205.42/20,899.33
  6. Step 6: Final answer
    x = 13,806.05

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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.